5,161 research outputs found
Snowden's revelations and the attitudes of students at Swedish universities
Purpose – Mapping of Swedish students' attitudes toward Snowden's revelations and their effects in the
political and socio-cultural environment of Sweden.
Design/methodology/approach – A questionnaire was answered by 190 Swedish University students.
The quantitative responses to the survey were statistically analysed as well as qualitative considerations
of free text answers.
Findings – Swedish students had a high level of knowledge of Snowden revelations, they actively
searched for information, they gave a positive judgement of Snowden's actions and they were willing to
follow his example in Sweden but not the US. They trusted their country and most of its institutions and
authorities except for secret service agencies and Internet and computer software companies.
Practical implications – Design of education for university students, especially in Information
Technology programs.
Social implications – Developing and applying policies on privacy, surveillance and whistleblowing.
Originality/value – This study is part of a bigger international study to map students' attitudes toward
Snowden's revelations and their opinions about privacy, surveillance and whistleblowing opening up for
cross-cultural analyses. This record was migrated from the OpenDepot repository service in June, 2017 before shutting down
Structure of the Fulde-Ferrell-Larkin-Ovchinnikov state in two-dimensional superconductors
Nonuniform superconducting state due to strong spin magnetism is studied in
two-dimensional type-II superconductors near the second order phase transition
line between the normal and the superconducting states. The optimum spatial
structure of the orderparameter is examined in systems with cylindrical
symmetric Fermi surfaces. It is found that states with two-dimensional
structures have lower free energies than the traditional one-dimensional
solutions, at low temperatures and high magnetic fields. For s-wave pairing,
triangular, square, hexagonal states are favored depending on the temperature,
while square states are favored at low temperatures for d-wave pairing. In
these states, orderparameters have two-dimensional structures such as square
and triangular lattices.Comment: 11 pages (LaTeX, revtex.sty), 3 figures; added reference
Tropical Krichever construction for the non-periodic box and ball system
A solution for an initial value problem of the box and ball system is
constructed from a solution of the periodic box and ball system. The
construction is done through a specific limiting process based on the theory of
tropical geometry. This method gives a tropical analogue of the Krichever
construction, which is an algebro-geometric method to construct exact solutions
to integrable systems, for the non-periodic system.Comment: 13 pages, 1 figur
A Remarkably Stable and Simple Monocyclic Thiepin. Synthesis and Properties of 2, 7-Di-tert-butyl-4-ethoxycarbonyl-5-methylthiepin
A simple monocyclic 8n electron thiepin, 2,7-di-tert-butyl-4-
-ethoxycarbonyl-5-methylthiepin (13) stabilized by two bulky tert-
-butyl groups at 2- and 7-positions, was synthesized from 2,6-di-
-tert-butyl-4-methylthiopyrylium tetrafluoroborate (11). In spite of
of its monocyclic thiepin structure, the compound 13 showed remarkable
thermal stability and had a half-life of 7.1 h at 130 °C.
Judging from the 1H-NMR spectrum, the thiepin 13 is considered
to be an atropic molecule.
Synthetic details of 11 and 13, and the chemical and physical
properties of 13 are also described
Energy from the gauge invariant observables
For a classical solution |Psi> in Witten's cubic string field theory, the
gauge invariant observable is conjectured to be equal to the
difference of the one-point functions of the closed string state corresponding
to V, between the trivial vacuum and the one described by |Psi>. For a static
solution |Psi>, if V is taken to be the graviton vertex operator with vanishing
momentum, the gauge invariant observable is expected to be proportional to the
energy of |Psi>. We prove this relation assuming that |Psi> satisfies equation
of motion and some regularity conditions. We discuss how this relation can be
applied to various solutions obtained recently.Comment: 27 pages; v5: minor revision in section 2, results unchange
Anomalous In-Plane Anisotropy of the Onset of Superconductivity in (TMTSF)2ClO4
We report the magnetic field-amplitude and field-angle dependence of the
superconducting onset temperature Tc_onset of the organic superconductor
(TMTSF)2ClO4 in magnetic fields H accurately aligned to the conductive ab'
plane. We revealed that the rapid increase of the onset fields at low
temperatures occurs both for H // b' and H // a, irrespective of the carrier
confinement. Moreover, in the vicinity of the Pauli limiting field, we report a
shift of a principal axis of the in-plane field-angle dependence of Tc_onset
away from the b' axis. This feature may be related to an occurrence of
Fulde-Ferrell-Larkin-Ovchinnikov phases.Comment: 4 pages, 4 figure
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