24,437 research outputs found
A multi-candidate electronic voting scheme with unlimited participants
In this paper a new multi-candidate electronic voting scheme is constructed
with unlimited participants. The main idea is to express a ballot to allow
voting for up to k out of the m candidates and unlimited participants. The
purpose of vote is to select more than one winner among candidates. Our
result is complementary to the result by Sun peiyong s scheme, in the sense,
their scheme is not amenable for large-scale electronic voting due to flaw of
ballot structure. In our scheme the vote is split and hidden, and tallying is
made for encoding in decimal base without any trusted third
party, and the result does not rely on any traditional cryptography or
computational intractable assumption. Thus the proposed scheme not only solves
the problem of ballot structure, but also achieves the security including
perfect ballot secrecy, receipt-free, robustness, fairness and
dispute-freeness.Comment: 6 page
Matching the Quasi Parton Distribution in a Momentum Subtraction Scheme
The quasi parton distribution is a spatial correlation of quarks or gluons
along the direction in a moving nucleon which enables direct lattice
calculations of parton distribution functions. It can be defined with a
nonperturbative renormalization in a regularization independent momentum
subtraction scheme (RI/MOM), which can then be perturbatively related to the
collinear parton distribution in the scheme. Here we
carry out a direct matching from the RI/MOM scheme for the quasi-PDF to the
PDF, determining the non-singlet quark matching
coefficient at next-to-leading order in perturbation theory. We find that the
RI/MOM matching coefficient is insensitive to the ultraviolet region of
convolution integral, exhibits improved perturbative convergence when
converting between the quasi-PDF and PDF, and is consistent with a quasi-PDF
that vanishes in the unphysical region as the proton momentum ,
unlike other schemes. This direct approach therefore has the potential to
improve the accuracy for converting quasi-distribution lattice calculations to
collinear distributions.Comment: 18 pages, 6 figure
Doubled Conformal Compactification
We use Weyl transformations between the Minkowski spacetime and dS/AdS
spacetime to show that one cannot well define the electrodynamics globally on
the ordinary conformal compactification of the Minkowski spacetime (or dS/AdS
spacetime), where the electromagnetic field has a sign factor (and thus is
discountinuous) at the light cone. This problem is intuitively and clearly
shown by the Penrose diagrams, from which one may find the remedy without too
much difficulty. We use the Minkowski and dS spacetimes together to cover the
compactified space, which in fact leads to the doubled conformal
compactification. On this doubled conformal compactification, we obtain the
globally well-defined electrodynamics.Comment: 14 pages, 4 figure
Extracting Functional Modules from Biological Pathways
It has been proposed that functional modules are the fundamental units of cellular function. Methods to identify these modules have thus far relied on gene expression data or protein-protein interaction (PPI) data, but have a few limitations. We propose a new method, using biological pathway data to identify functional modules, that can potentially overcome these limitations. We also construct a network of these modules using functionally relevant PPI data. This network displays the flow and integration of information between modules and can be used to map cellular function
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