7,471 research outputs found
A note on drastic product logic
The drastic product is known to be the smallest -norm, since whenever . This -norm is not left-continuous, and hence it
does not admit a residuum. So, there are no drastic product -norm based
many-valued logics, in the sense of [EG01]. However, if we renounce standard
completeness, we can study the logic whose semantics is provided by those MTL
chains whose monoidal operation is the drastic product. This logic is called
in [NOG06]. In this note we justify the study of this
logic, which we rechristen DP (for drastic product), by means of some
interesting properties relating DP and its algebraic semantics to a weakened
law of excluded middle, to the projection operator and to
discriminator varieties. We shall show that the category of finite DP-algebras
is dually equivalent to a category whose objects are multisets of finite
chains. This duality allows us to classify all axiomatic extensions of DP, and
to compute the free finitely generated DP-algebras.Comment: 11 pages, 3 figure
Editors' introduction: conflicts within the crisis
Introduction to Social Justice Special Issue, Conflicts within the Crisis
Comparisons of the Monte Carlo programs HORACE and WINHAC for single-W-boson production at hadron colliders
We present the comparisons of two independent Monte Carlo event generators,
HORACE and WINHAC, for single-W-boson production in hadronic collisions with
multiphoton effects in leptonic W decays. These comparisons were performed
first at the parton level with fixed quark-beams energy, and then at the hadron
level for proton-proton collisions at the LHC. In general, a good agreement
between the two programs has been found. Possible sources of differences in
some of the presented results are discussed. We also present and discuss the
effects of including non-zero quark masses for the main single-W-boson
observables at the LHC.Comment: 32 pages, 40 PostScript figure
The Mormon Handcart Migration: “Neither Tongue nor pen can Never Tell the Sorrow
Candy Moulton’s The Mormon Handcart Migration: “Tounge nor Pen Can never tell the Sorrow” tells the story of determined and courageous pioneers from the Church of Jesus Christ of Latter Day Saints (hereafter referred to as the Church or church members) migrating across the Great Plains and the mountains in the late 1850s to reach their destination of Salt Lake City pulling and pushing their supplies on handcarts. Approximately 3,000 people made the journey, with between 250 and 300 losing their lives along the way, one of the greatest losses of lives in the entire settlement of the west. While this book is not the first to tell this story, Moulton’s account is especially compelling and heartrending. Relying on a trove of first accounts from the actual pioneers, Moulton focuses her book on the experiences and thoughts of the pioneers
Higgs decay into four charged leptons in the presence of dimension-six operators
We study the indirect effects of New Physics in the Higgs decay into four
charged leptons, using an Effective Field Theory (EFT) approach to Higgs
interactions. We evaluate the deviations induced by the EFT dimension-six
operators in observables like partial decay width and various kinematic
distributions, including angular observables, and compare them with the
contribution of the full SM electroweak corrections. The calculation is
implemented in an improved version of the event generator Hto4l, which can
provide predictions in terms of different EFT-bases and is available for data
analysis at the LHC. We also perform a phenomenological study in order to
assess the benefits coming from the inclusion of differential information in
the future analyses of very precise data which will be collected during the
high luminosity phase of the LHC.Comment: 31 pages, 8 figures, 1 table. Version to appear on JHEP, expanded
phenomenological section including an analysis for HL-LH
Knowledge, attitudes, and behavior concerning dental trauma among parents of children attending primary school
BACKGROUND: Traumatic dental injuries occur frequently in children and adolescents. The purpose of the present study is to examine the levels of knowledge and behaviors regarding dental trauma among parents of children attending primary schools in the Apulia region of Italy.
METHODS: The study was carried out using an anonymous questionnaire with closed answers distributed to 2,775 parents who were enrolled based on the entire regional school population. Analyses were conducted using the PROC CORRESP (procedure to perform multiple correspondence analysis) and PROC FASTCLUS (procedure to perform cluster analysis). Statistical significance was set at p-value <0.05.
RESULTS: A total 15.5% of the sample reported that their children had experienced dental trauma. Overall, 53.8% of respondents stated that they knew what to do in cases of dental injury. Regarding the time limit within which it is possible to usefully intervene for dental trauma, 56.8% of respondents indicated "within 30 minutes". Of the total sample, 56.5% knew how to preserve a displaced tooth. A total 62.9% of parents felt it was appropriate for their children to use dental guards during sports activities. The multivariate analysis showed that wrong knowledge are distributed among all kinds of subject. Parents with previous experience of dental trauma referred right behaviours, instead weak knowledge and wrong behaviours are associated with parents that easily worried for dental events.
CONCLUSIONS: This study showed that most parents reported no experience of dental trauma in their children, and half of them did not know what to do in case of traumatic dental injury and they would intervene within 30 minutes, suggesting that dental trauma may trigger panic. However, they did not have the information needed to best assist the affected child. Motivating parents to assume a preventive approach towards dental trauma may produce positive changes that would result an increase of long-term health benefits among both parents and children
with a production
The cross section of
process with a complete set of tree diagrams, 232 diagrams in the unitary
gauge, was calculated at the energy range of = 340 - 500 GeV by
using GRACE system. A main contribution to the cross section comes from
production, where and decay into and
, respectively. It was found that the
interference between the diagrams with production and those with
single- through pair production amounts to 10% at the
threshold energy region. In the energy region above twice of the top quark
mass, more than 95% of the cross section comes from the diagrams.Comment: 17 pages, 8 PostScript figures, LateX; To appear in Phys. Lett.
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