53,845 research outputs found

    DNA-Based Kinship Analysis

    Get PDF
    Relatedness between individuals and groups can be investigated using DNA markers. A child’s DNA profile is a combination of alleles passed down from the father and mother. This means that relationships can be investigated between alleged family members. DNA profiling is commonly used to test for potential paternity, parentage and sibship (whether people are related as brothers or sisters) relationships. In many forensic cases more complex relationships have to be considered

    Space Assurance or Space Dominance? The Case Against Weaponizing Space

    Get PDF
    Argues that the pursuit of space dominance could impair global commerce, produce long-lasting, environmental debris in space, and harm alliance ties as well as relations between the United States and Russia and China

    Centrality and pseudorapidity dependence of the transverse energy flow in pPb collisions at sqrt(s_NN) = 5.02 TeV

    Full text link
    The almost hermetic coverage of CMS is used to measure the distribution of transverse energy as a function of pseudo-rapidity for pPb collisions at sNN=5.02\sqrt{s_{NN}} = 5.02 TeV. For minimum bias collisions (1/N) dET/dη(1/N)~dE_T/d\eta reaches 23 GeV which implies an ETE_T per participant pair comparable to that of peripheral PbPb collisions at sNN=2.76\sqrt{s_{NN}} = 2.76 TeV. The centrality dependence of transverse energy production has been studied using centrality measures defined in three different angular regions. There is a strong auto-correlation between (1/N) dET/dη(1/N)~dE_T/d\eta and the η\eta range used to define centrality %both for data and the EPOS-LHC and HIJING event generators. The centrality dependence of the data is much stronger for η\eta values on the lead side than the proton side and shows significant differences from that predicted by either event generator.Comment: 4 pages, 4 figures, proceedings of the Quark Matter 2015 Conferenc

    From Polygons to Ultradiscrete Painlev\'e Equations

    Get PDF
    The rays of tropical genus one curves are constrained in a way that defines a bounded polygon. When we relax this constraint, the resulting curves do not close, giving rise to a system of spiraling polygons. The piecewise linear transformations that preserve the forms of those rays form tropical rational presentations of groups of affine Weyl type. We present a selection of spiraling polygons with three to eleven sides whose groups of piecewise linear transformations coincide with the B\"acklund transformations and the evolution equations for the ultradiscrete Painlev\'e equations

    Thermal Corrections to R\'enyi entropies for Free Fermions

    Full text link
    We calculate thermal corrections to R\'{e}nyi entropies for free massless fermions on a sphere. More specifically, we take a free fermion on R×Sd1\mathbb{R}\times\mathbb{S}^{d-1} and calculate the leading thermal correction to the R\'{e}nyi entropies for a cap like region with opening angle 2θ2\theta. By expanding the density matrix in a Boltzmann sum, the problem of finding the R\'{e}nyi entropies can be mapped to the problem of calculating a two point function on an nn sheeted cover of the sphere. We follow previous work for conformal field theories to map the problem on the sphere to a conical region in Euclidean space. By using the method of images, we calculate the two point function and recover the R\'{e}nyi entropies.Comment: 15 pages, 5 figure
    corecore