703 research outputs found
Alien Registration- Lallemand, Marie B. (Lewiston, Androscoggin County)
https://digitalmaine.com/alien_docs/28779/thumbnail.jp
User Experience Design for E-Voting: How mental models align with security mechanisms
This paper presents a mobile application for vote-casting and
vote-verification based on the Selene e-voting protocol and explains how it was
developed and implemented using the User Experience Design process. The
resulting interface was tested with 38 participants, and user experience data
was collected via questionnaires and semi-structured interviews on user
experience and perceived security. Results concerning the impact of displaying
security mechanisms on UX were presented in a complementary paper. Here we
expand on this analysis by studying the mental models revealed during the
interviews and compare them with theoretical security notions. Finally, we
propose a list of improvements for designs of future voting protocols.Comment: E-Vote-ID 2019 TalTech Proceeding
Zero temperature phases of the frustrated J1-J2 antiferromagnetic spin-1/2 Heisenberg model on a simple cubic lattice
At zero temperature magnetic phases of the quantum spin-1/2 Heisenberg
antiferromagnet on a simple cubic lattice with competing first and second
neighbor exchanges (J1 and J2) is investigated using the non-linear spin wave
theory. We find existence of two phases: a two sublattice Neel phase for small
J2 (AF), and a collinear antiferromagnetic phase at large J2 (CAF). We obtain
the sublattice magnetizations and ground state energies for the two phases and
find that there exists a first order phase transition from the AF-phase to the
CAF-phase at the critical transition point, pc = 0.28. Our results for the
value of pc are in excellent agreement with results from Monte-Carlo
simulations and variational spin wave theory. We also show that the quartic 1/S
corrections due spin-wave interactions enhance the sublattice magnetization in
both the phases which causes the intermediate paramagnetic phase predicted from
linear spin wave theory to disappear.Comment: 19 pages, 4 figures, Fig. 1b modified, Appendix B text modifie
Interest of colchicine for the treatment of cystic fibrosis patients. Preliminary report.
Cystic fibrosis (CF) lung disease is characterized by persistent inflammation. Antiinflammatory drugs, such as corticosteroids and ibuprofen, have proved to slow the decline of pulmonary function although their use is limited because of frequent adverse events. We hypothesized that colchicine could be an alternative treatment because of its antiinflammatory properties and upregulatory effect on cystic fibrosis transmembrane regulator (CFTR) closely related proteins. We herein present results obtained in an open study of eight CF children treated with colchicine for at least 6 months. Clinical status was better in all patients and respiratory function tests significantly improved in five. Median duration of antibiotherapy decreased significantly. These preliminary results support our hypothesis of a beneficial effect of colchicine in CF patients and stress the need for a controlled therapeutic trial
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