380 research outputs found
The role of Belgorod’ mass-media in forming of public agenda
The article reveals the modalities of mass-media’s influence on public consciousness. The correlation of political, public and media agendas has also been investigated. For the first time the investigation has been made with consideration for a region, by the example of the Belgorod Regio
How do new media contribute to image-making? The case of personalized web-communications on runet
The paper discusses the impact of personalization on image-making activity through new media on Russian Web segment. The authors compare the target audiences and the content of various mass media and evaluate their imagemaking efficiency. The article concludes on perspectives of social networking media in making image of PR-subjects in terms of personalizationyesBelgorod State Universit
The LHC (CMS) Discovery Potential for Models with Effective Supersymmetry and Nonuniversal Gaugino Masses
We investigate squark and gluino pair production at LHC (CMS) with subsequent
decays into quarks, leptons and LSP in models with effective supersymmetry
where third generation of squarks is relatively light while the first two
generations of squarks are heavy. We consider the general case of nonuniversal
gaugino masses. Visibility of signal by an excess over SM background in (n \geq
2)jets + (m \geq 0)leptons + E^{miss}_T events depends rather strongly on the
relation between LSP, second neutralino, gluino and squark masses and it
decreases with the increase of LSP mass. We find that for relatively heavy
gluino it is very difficult to detect SUSY signal even for light 3^{rd}
generation squarks (m_{\tilde q_3}\le 1 TeV) if the LSP mass is closed to the
3^{rd} generation squark mass.Comment: 1 latex (35 pages), 4 eps (figures) file
Effects of supersymmetric grand unification scale physics on
Although calculations of the rate in supersymmetric
grand unified models have always either ignored the gluino mediated
contribution or found it to be negligible, we show that taking universal
supersymmetry breaking masses at the Planck scale, rather than at the gauge
unification scale as is customary, leads to the gluino contribution being more
significant and in fact sometimes even larger than the chargino mediated
contributions when and is of order 1. The impact is
greatest felt when the gluinos are relatively light. Taking the universal
boundary condition at the Planck scale also has an effect on the chargino
contribution by increasing the effect of the wino and higgsino-wino mediated
decays. The neutralino mediated contribution is found to be enhanced, but
nevertheless it remains relatively insignificant.Comment: Title changed, final version as accepted for PRD, 12 pages, 6 Figures
(Figs.2-6 included, uuencoded, epsf.tex
Stabilized Singlets in Supergravity as a Source of the mu-parameter
Within the context of supergravity-coupled supersymmetry, fields which are
gauge and global singlets are usually considered anathema. Their vacuum
expectation values are shifted by quadratically divergent tadpole diagrams
which are cutoff at the Planck scale, destabilizing the classical potential and
driving the singlet field to large values. We demonstrate a new and generic
mechanism which stabilizes the singlet in the presence of an extended gauge
symmetry. Such a symmetry will be broken down to the Standard Model by the
supergravity interactions near the scale of spontaneous supersymmetry-breaking
in the hidden-sector (about 10^{10-11} GeV). The resulting singlet expectation
value is stabilized and naturally of order the gravitino mass, providing
therefore a weak-scale mass for the Higgs fields of the supersymmetric Standard
Model (a "mu-parameter"). The resulting low-energy theory is the minimal
supersymmetric Standard Model, with all new fields decoupling at the
intermediate scale.Comment: 9 pages, LaTe
Single flux quantum circuits with damping based on dissipative transmission lines
We propose and demonstrate the functioning of a special Rapid Single Flux
Quantum (RSFQ) circuit with frequency-dependent damping. This damping is
achieved by shunting individual Josephson junctions by pieces of open-ended RC
transmission lines. Our circuit includes a toggle flip-flop cell, Josephson
transmission lines transferring single flux quantum pulses to and from this
cell, as well as DC/SFQ and SFQ/DC converters. Due to the desired
frequency-dispersion in the RC line shunts which ensures sufficiently low noise
at low frequencies, such circuits are well-suited for integrating with the
flux/phase Josephson qubit and enable its efficient control.Comment: 6 pages incl. 6 figure
The strong coupling, unification, and recent data
The prediction of the strong coupling assuming (supersymmetric) coupling
constant unification is reexamined. We find, using the new electroweak data,
. The implications of the large
value are discussed. The role played by the beauty width is
stressed. It is also emphasized that high-energy (but not low-energy)
corrections could significantly diminish the prediction. However, unless
higher-dimension operators are assumed to be suppressed, at present one cannot
place strong constraints on the super-heavy spectrum. Non-leading electroweak
threshold corrections are also discussed.Comment: 12 pages, LaTex + RevTex, uuencoded postscript file (including 13
figures) is attached. Also available at ftp://dept.physics.upenn.edu/pub/Ni
Higher stability of oat, barley and wheat accessions in their 1000 grain weight is not associated with a smaller grain size
Background. It is important and relevant to know whether the selection among cultivars for increased stability in the weight of 1000 grains involves a significant change in grain size. The aim of the study was to analyze the relationship between the 1000 grain weight in oat, barley and wheat accessions, on the one hand, and their adaptability indicators for this trait, on the other. Material and methods. The studied material included 10 cultivars of oat, 12 of barley, and 11 of wheat from the VIR collection. Plants were grown in 2021 at five different sites over Eastern Siberia (Krasnoyarsk Territory, and the Republic of Khakassia and Tyva). After harvesting, the weight of 1000 grains was measured for each cultivar. The coefficient of environmental variation (Cv), stress tolerance index (d), homeostasis parameter (Hom), stability level index (CSL), and breeding value index (Cs) were determined to assess the cultivars for the analyzed character. Results. Oat cultivars exhibited significantly lower plasticity and higher stability in their 1000 grain weight. The best adaptability characteristics were recorded for oat cvs. ‘Argument’ and ‘Kross’, barley cvs. ‘Krasnoyarsky 91’ and ‘Biom’, and wheat cvs. ‘Novosibirskaya 49’ and ‘Novosibirskaya 75’. Cvs. ‘Kross’ and ‘Argument’ (oat). and ‘Biom’ (barley) had the largest grain size and maximum values of the character’s stability parameters. Correlations of oat and wheat grain size with both plasticity indices were negative, and positive with all stability parameters, being significant for CSL and Cs. In the case of barley cultivars, the correlation between the weight of 1000 grains and the plasticity index was negative and statistically significant. Conclusion. The results demonstrate that when selecting oat, barley and wheat for increased stability of their 1000 grain weight, the grain size will not decrease. Moreover, it may have a tendency to increase
An Exact Approach to the Oscillator Radiation Process in an Arbitrarily Large Cavity
Starting from a solution of the problem of a mechanical oscillator coupled to
a scalar field inside a reflecting sphere of radius , we study the behaviour
of the system in free space as the limit of an arbitrarily large radius in the
confined solution. From a mathematical point of view we show that this way of
facing the problem is not equivalent to consider the system {\it a} {\it
priori} embedded in infinite space. In particular, the matrix elements of the
transformation turning the system to principal axis, do not tend to
distributions in the limit of an arbitrarily large sphere as it should be the
case if the two procedures were mathematically equivalent. Also, we introduce
"dressed" coordinates which allow an exact description of the oscillator
radiation process for any value of the coupling, strong or weak. In the case of
weak coupling, we recover from our exact expressions the well known decay
formulas from perturbation theory.Comment: 27 page
Compatibility of the new DAMA/NaI data on an annual modulation effect in WIMP direct search with a relic neutralino in supergravity schemes
Recent results of the DAMA/NaI experiment for WIMP direct detection point to
a possible annual modulation effect in the detection rate. We show that these
results, when interpreted in terms of a relic neutralino, are compatible with
supergravity models. Together with the universal SUGRA scheme, we also consider
SUGRA models where the unification condition in the Higgs mass parameters at
GUT scale is relaxed.Comment: 10 pages, ReVTeX, 13 figures (included as PS files
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