87,541 research outputs found
Statefinder diagnostic for modified Chaplygin gas cosmology in f(R,T) gravity with particle creation
In this paper, we have studied flat
Friedmann--Lema\^{\i}tre--Robertson--Walker (FLRW) model with modified
Chaplygin gas (MCG) having equation of state p_{m}=A\rho -% \frac{B}{\rho
^{\gamma }}, where , and is any
positive constant in }{\footnotesize \ gravity with
particle creation. We have considered a simple parametrization of the Hubble
parameter in order to solve the field equations and discussed the time
evolution of different cosmological parameters for some obtained models showing
unique behavior of scale factor. We have also discussed the statefinder
diagnostic pair that characterizes the evolution of obtained models
and explore their stability. The physical consequences of the models and their
kinematic behaviors have also been scrutinized here in some detail.Comment: 21 pages, 23 figures. arXiv admin note: text overlap with
arXiv:1603.02573 by other author
Role of immunoturbidimetric plasma fibrin D-dimer test in patients with coronary artery disease as well as ischemic heart disease in emergency medicine
The aim of the present was to assess the value of the ELISA D-dimer (hemostatic marker) assay in patients with coronary artery disease as well as ischemic heart disease presenting to the emergency department with chest pain syndrome. Methods: We measured levels of D-dimers (µg/ml by immunoturbidimetric assay) in 120 patients with angiographically proved CAD, consecutive outpatients with chest pain, arterial fibrillation, acute coronary syndromes and 240 age and sex matched healthy controls. Demographic characteristics were assessed by a standardized questionnaire, and a complete lipid profile was performed for all subjects. In addition to this inflammatory marker C- reactive protein was also measured. Result: The distribution of D-dimer levels skewed to the right, and plasma mean levels were higher in cases than in control (mean: 2.51±3.60 vs .41±.59 µg/ml; p<0.001). In contrast, correlation of D-dimer was found with C-reactive protein (p<0.001) and is higher in cases than controls. Conclusion: Plasma D-dimer levels are strongly and independently associated with the presence of CAD in patients with stable angina. These results support the concept of a contribution of intravascular fibrin to atherothrombogenesis
Session 2-3-F: Gaming Applications of a Forgotten Distribution
Introduction
The bonus game has become a very important part of the slot machine, as indicated by a large number of patent applications and patents (Bennett, 2000; Slomiany and Grupp, 2000; Vancurra, 2000; Baerlocher et al, 2002; Jaffe et al, 2002; Cannon and Donovan, 2003; Dickerson, 2005). Therefore, probability distributions suitable for developing games are very much in need. In this study, we illustrate how a forgotten discrete probability distribution, viz. the negative hypergeometric distribution, can be used to develop bonus games for slot machines, and also to analyze existing bonus games. The mean and the variance for this distribution were not readily available. However, these measures were recently computed using a new technique (Jones, 2013) and are available at present. The mean of the probability distribution is needed to compute to the house advantage or par of a slot game, and the variance is needed for calculating the variance of the slot game payout distribution. The variance of a slot game significantly impacts the ‘time on device’ that a player gets (Lucas et al, 2007; Lucas and Singh, 2008) from the slot game, and therefore is an important parameter of a slot game
Frustration of tilts and A-site driven ferroelectricity in KNbO_3-LiNbO_3 alloys
Density functional calculations for K_{0.5}Li_{0.5}NbO_3 show strong A-site
driven ferroelectricity, even though the average tolerance factor is
significantly smaller than unity and there is no stereochemically active A-site
ion. This is due to the frustration of tilt instabilities by A-site disorder.
There are very large off-centerings of the Li ions, which contribute strongly
to the anisotropy between the tetragonal and rhombohedral ferroelectric states,
yielding a tetragonal ground state even without strain coupling.Comment: 4 pages, 5 figure
Thermoelectric properties of -FeSi
We investigate the thermoelectric properties of -FeSi
using first principles electronic structure and Boltzmann transport
calculations. We report a high thermopower for both \textit{p}- and
\textit{n}-type -FeSi over a wide range of carrier
concentration and in addition find the performance for \textit{n}-type to be
higher than for the \textit{p}-type. Our results indicate that, depending upon
temperature, a doping level of 3 - 2
cm may optimize the thermoelectric performance
Content creation and E-learning in Indian Languages : a model
In the era of E-publishing and E-learning, numerous
universities and cultural organizations around the world have launched initiatives to develop tools for multilingual learning and web publishing and have given preference to local content. India has different languages and different culture. Most of the knowledge and information related to people, culture, science and philosophy of India is available in Indian languages, which will be useful for learning and developing knowledge base. In India E-learning
systems and online courses are already started, but as a multi lingual country, which gives importance to education through regional languages, there should be facilities for multi lingual E-learning. This paper covers the issues of Indian language knowledge base/content base, its requirement, and its implication in e learning. An Integrated multi lingual E-learning system for India is proposed in this paper, where importance given to multi lingual course content creation
Itinerant magnetism in metallic CuFe2Ge2
Theoretical calculations are performed to understand the electronic structure
and magnetic properties of CuFeGe. The band structure reveal large
electron density at the Fermi level suggesting strong itinerant
character of magnetism. The Fermi surface is dominated by two dimensional sheet
like structures, with potentially strong nesting between them. The magnetic
ground state appears to be ferromagnetic along and antiferromagnetic in
other directions. The results show that CuFeGe is an antiferromagnetic
metal, with similarities to the Fe-based superconductors; such as magnetism
with substantial itinerant character and coupling between magnetic order and
electrons at the Fermi energy.Comment: 5 pages, 6 figure
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