1,675 research outputs found
The Mobile Privacy-Security Knowledge Gap Model: Understanding Behaviors
Increasing collection of individuals’ information has led to several security and privacy issues, such as identity theft and targeted marketing. These risks are further heightened in the mobile realm as data collection can occur continuously and ubiquitously. Most existing research considers threats to privacy and security as separate concerns, resulting in separate research streams. However, focusing on information privacy alone results in a lack of understanding of the security ramifications of individual information disclosure. Using the Information Motivation Behavioral (IMB) Skills Model as a theoretical foundation, we develop the Knowledge Gap Model of Security and Privacy Behavior. In the model, we propose that two knowledge gaps exist that affect how individuals enact security and privacy behaviors: the security-privacy knowledge gap, and the knowledge-belief gap. We use the model to develop a research agenda for future research
Issues, Discontent, and Third-Party Voting: The Case of the Netherlands
Scholarly accounts of the dramatic breakthrough of the List Pim Fortuyn (LPF) in the 2002
Dutch parliamentary election have mostly emphasized two factors behind the success of
that party. It has first been argued that the LPF brought a distinct issue profile to the
electoral arena, which made it attractive for voters holding similar policy views. The
second hypothesis, that feelings of political discontent also fuelled support for the LPF,
remains highly contested because of the possible endogeneity bias of cynicism attitudes.
We re-examine this question using survey data from the 1998-2002 panel of the Dutch
National Election Study. Our approach’s novelty is to estimate 2002’s vote choice using
indicators of individuals’ issue priorities and cynical attitudes as measured in the 1998
wave of the panel. The findings suggest that policy preferences and attitudes of discontent
both contributed to the LPF vote, thus providing support for both interpretations of the rise
of this party. These results are consistent with most existing work on “third” or minor party
voting showing that lack of confidence toward government and politics is fertile ground for
these party movements.Session 2: Political representation and legitimac
Changes in psychological need satisfaction
Abstract: Objective: (a) Examine longitudinal measurement invariance of scores from psychological need satisfaction (PNS) scales and (b) examine if changes in PNS were associated with change in moderate-to-vigorous physical activity (MVPA). Methods: Adolescents (N=842, Mage = 10.8, SD = .6) enrolled in the Monitoring Activities of Teenagers to Comprehend their Habits (MATCH) study completed measures of PNS and MVPA every 4 months over a 3 year period (2011-14) for a total of nine times. Results: PNS scores demonstrated strong longitudinal measurement invariance (i.e., invariant factor loadings and intercepts). Latent growth curve modeling indicated that a factor representing perceptions of all three PNS variables was positively associated with MVPA at Time 1 (β = .566, p<.05), and that increases in the common PNS factor were associated with increases in MVPA (β = .545, p<.05) with a large effect size (R2initial MVPA=.316; R2change in MVPA=.301). In an alternative model, MVPA at Time 1 was associated with perceived common PNS at Time 1 (β=.602, p<.001), and increases in MVPA were associated with increases in common PNS (β=.667, p<.001) with a large effect size (R2initial PNS=.363 of the R2change in PNS=.426). Conclusions: Longitudinal measurement invariance was supported, and therefore PNS scores could be used to study change over time. Further, two equally well fitting models were found suggesting that change in PNS can be both an antecedent and an outcome of MVPA. As such, both PNS and MVPA could be targeted in interventions aimed at increasing need satisfaction or MVPA
Phenomenological Aspects of Gauge Mediation with Sequestered Supersymmetry Breaking in light of Dark Matter Detection
In a recent work, a model of gauge mediation with sequestered supersymmetry
(SUSY) breaking was proposed. In this model, the mass of the gravitino is
O(100) GeV without causing the flavor-changing neutral-current problem. In
contrast to traditional gauge mediation, the gravitino is not the lightest SUSY
particle and the neutralino is the candidate of the dark matter. In this paper,
we investigate phenomenological aspects of this model and discuss the
possibility of the direct detection of the dark matter. In particular, we focus
on the light neutralino case and find that the light-Higgsino scenario such as
the focus point is interesting, taking account of the recent CDMS result.Comment: 17 pages, 8 figures; v2:references added, some corrections;
v3:version accepted for publication in JHE
Relic density of neutralino dark matter in the MSSM with CP violation
We calculate the relic density of dark matter in the MSSM with CP violation.
We analyse various scenarios of neutralino annihilation: the cases of a bino,
bino-wino and bino-Higgsino LSP, annihilation through Higgs, as well as
sfermion coannihilation scenarios. Large phase effects are found, on the one
hand due to shifts in the masses, on the other hand due to modifications of the
couplings. Taking special care to disentangle the effects in masses and
couplings, we demonstrate that the presence of CP phases can have a significant
influence on the neutralino relic abundance. Typical variations in \Omega h^2
solely from modifications in the couplings are O(10%-100%), but can reach an
order of magnitude in some cases.Comment: 36 pages, 21 figures (low resolution). A version with high-resolution
figures can be downloaded from http://cern.ch/kraml/papers/omc
B-Meson Gateways to Missing Charmonium Levels
We outline a coherent strategy for exploring the four remaining narrow
charmonium states [\eta_{c}^{\prime}(2\slj{1}{1}{0}),
h_{c}(1\slj{1}{2}{1}), \eta_{c2}(1\slj{1}{3}{2}), and
\psi_{2}(1\slj{3}{3}{2})] expected to lie below charm threshold. Produced in
-meson decays, these levels should be identifiable \textit{now} via striking
radiative transitions among charmonium levels and in exclusive final states of
kaons and pions. Their production and decay rates will provide much needed new
tests for theoretical descriptions of heavy quarkonia.Comment: 5 pages, uses ReVTeX and BibTe
Multilevel Research in Information Systems: Concepts, Strategies, Problems, and Pitfalls
Information systems (IS) researchers often explore complex phenomena that result from the interplay between technologies and human actors; as such, IS research frequently involves constructs found at multiple levels of analysis, although rarely recognized as such. In fact, our targeted review of the IS literature found minimal explicit consideration of the issues posed by multilevel research although a number of studies implicitly conducted research at multiple levels. In this paper, we discuss the issues that result from not explicitly recognizing the multilevel nature of one’s work and offer guidance on how to identify and explicitly conduct multilevel IS research. Recognizing the relevance of multilevel research for the IS domain, we discuss a systematic approach to conduct quantitative multilevel IS research that is grounded in an overarching framework that focuses equally on testing variables and entities. We also highlight the unique role of IS in developing multilevel opportunities for researchers. Finally, we identify a number of gaps within the IS literature in which specific multilevel research questions may be articulated. Such explicit consideration of multilevel issues in future IS research will not only improve IS research but contribute to the larger discourse on multilevel research
Jean-Baptiste Bélanger, hydraulic engineer, researcher and academic
Jean-Baptiste BÉLANGER (1790-1874) worked as a hydraulic engineer at the beginning of his career. He developed the backwater equation to calculate gradually-varied open channel flow properties for steady flow conditions. Later, as an academic at the leading French engineering schools (Ecole Centrale des Arts et Manufactures, Ecole des Ponts et Chaussées, and Ecole Polytechnique), he developed a new university curriculum in mechanics and several textbooks including a seminal text in hydraulic engineering. His influence on his contemporaries was considerable, and his name is written on the border of one of the four facades of the Eiffel Tower. BÉLANGER's leading role demonstrated the dynamism of practicing engineers at the time, and his contributions paved the way to many significant works in hydraulics
Light Sneutrino Dark Matter at the LHC
In supersymmetric (SUSY) models with Dirac neutrino masses, a weak-scale
trilinear A-term that is not proportional to the small neutrino Yukawa
couplings can induce a sizable mixing between left and right-handed sneutrinos.
The lighter sneutrino mass eigenstate can hence become the lightest SUSY
particle (LSP) and a viable dark matter candidate. In particular, it can be an
excellent candidate for light dark matter with mass below ~10 GeV. Such a light
mixed sneutrino LSP has a dramatic effect on SUSY signatures at the LHC, as
charginos decay dominantly into the light sneutrino plus a charged lepton, and
neutralinos decay invisibly to a neutrino plus a sneutrino. We perform a
detailed study of the LHC potential to resolve the light sneutrino dark matter
scenario by means of three representative benchmark points with different
gluino and squark mass hierarchies. We study in particular the determination of
the LSP (sneutrino) mass from cascade decays involving charginos, using the mT2
variable. Moreover, we address measurements of additional invisible sparticles,
in our case the lightest neutralino, and the question of discrimination against
the MSSM.Comment: 25 pages, 16 figure
- …