Weighted Distribution Function Research Articles

Retrieving knowledgeable information from cloud using trapezoid-based multi-keyword query ranking with weighted distributed function

Collection of information is available in cloud and growing at an exponential rate and this scope makes the organisation and accessing of data critical for efficient use of knowledgeable information. In order to obtain the desired outcome, users heavily rely upon the cloud information retrieval methods. Many research works have been conducted in the field of knowledge related information retrieval. However, effective ranking of complex query pose significant challenges. In this paper, to efficiently rank the query on cloud services a method called, weighted fuzzy multi-keyword rank query (WFM-KRQ) is introduced. This method is based on associating a query with a fuzzy rule, applying a weighted distribution function and a pruning technique based on a threshold value. The proposed encrypted RepeatKeyRotate algorithm effectively improves the performance rate of cloud data sharing services by reducing the processing time and improving the retrieval rate on handling complex queries when compared to the state-of-the-art works.

Location‐only and use‐availability data: analysis methods converge

Location‐only and use‐availability data: analysis methods converge

Proposal for territorial distribution of the 2010 EU road safety target

European Union (EU) road safety policies include reduction in road fatalities by 50% during 2000–2010. The original territorial distribution of this target is uniform, as all the territories have to halve the number of fatalities regardless of their previous record. We propose a simple method of distributing the total effort required to reach the EU target of halving fatalities in a territory in such a way that those areas with a higher proportion of fatalities (relative to their populations) have the highest targets and the sum of all of the areas is the 50% reduction. The distribution function we use here is based on an inverse logarithmic function selected from among several alternative functions analyzed in an initial study. This use of weighted distribution functions has been applied since 2000 by the EU in other policies, such as the use of renewable energies. We applied the proposed distribution function to two territorial aggregation levels in the EUROSTAT Nomenclature of Territorial Units for Statistics (NUTS): NUTS0 for EU-15 and EU-25 Member States, and NUTS3 for the 50 Spanish provinces, comparing the new and old targets with the real achievements for the 2000–2006 period, and new and old targets for the 2000–2010 period. This is a simple proposal for modification of target distribution that can be further improved using other parameters, such as road or weather conditions.

Predictions for double spin asymmetryALTin semiinclusive DIS

In the leading order of QCD parton model of semiinclusive deep inelastic scattering (SIDIS) the double spin asymmetry ${A}_{LT}$ arises due to the longitudinal polarization of quarks in the transversely polarized nucleon. The corresponding ${k}_{T}^{2}$ weighted distribution function ${g}_{1T}^{(1)}$ can be related to ordinary helicity distribution ${g}_{1}(x)$ measured in DIS. Using recent parametrizations for (un)polarized distribution and fragmentation functions we calculated ${A}_{LT}$ asymmetry on transversely polarized proton and deuteron targets for different types of hadron production. The predictions are given for COMPASS, HERMES, and JLab energies. The role of Lorentz invariance relations and positivity constraints are discussed.

Local orientational correlations in fluidCO 2 in a wide range of thermodynamic parameters

In this paper we present a thorough study of the local microscopic structure of carbon dioxide in a wide thermodynamic region, covering both undercritical and supercritical states. From neutron diffraction measurements we derive accurate information on the neutron weighted distribution function,gnw (τ), which allows us to single out a realistic interaction potential to be used in Molecular Dynamics (MD) simulations. These MD simulations are then performed to supplement the information obtained from the neutron scattering experiments. In such a way we determine appropriateaverages of the molecular distribution function,g(R, ω1,ω2). The presence of preferred relative orientations between neighbouring molecules is evident. We find that, among first neighbouring molecules,T-shaped configurations are largely preferred in all the investigated thermodynamic states and that electrostatic interactions play a crucial role in determining the local structure of the fluid.

Longitudinal quark polarization in transversely polarized nucleons.

Accounting for transverse momenta of the quarks, a longitudinal quark spin asymmetry exists in a transversely polarized nucleon target. The relevant leading quark distribution $g_{1T}(x,k_T^2)$ can be measured in the semi-inclusive deep-inelastic scattering. The average $k_T^2$ weighted distribution function $g^{(1)}_{1T}$ can be obtained directly from the inclusive measurement of $g_2$.

Temperature Dependence of the Total Interference Functions of Liquid Cu-Sn Alloys

The total interference function I (K), which is a weighted sum of the partial interference functions, and the corresponding weighted distribution function have been calculated from the elastic x-ray scattering of liquid Cu-Sn alloys with 20 and 22.5 at.% Sn measured at temperatures between 800 and 1160\ifmmode^\circ\else\textdegree\fi{}C. The total I(K) of the alloys show a slight decrease in the position ${K}_{1}=\frac{4\ensuremath{\pi}({sin\ensuremath{\theta}}_{1})}{\ensuremath{\lambda}}$ and in height of the first peak with increasing temperature [${K}_{1}=2.88$ ${\mathrm{\AA{}}}^{\ensuremath{-}1}$ and $\mathrm{I}({K}_{1})=3.05$ at 800\ifmmode^\circ\else\textdegree\fi{}C, and ${K}_{1}=2.86$ ${\mathrm{\AA{}}}^{\ensuremath{-}1}$ and $\mathrm{I}({K}_{1})=2.50$ at 1160\ifmmode^\circ\else\textdegree\fi{}C]. On using the total $\mathrm{I}(K)$ in the Faber-Ziman theory of electrical resistivity ${\ensuremath{\rho}}_{R}$ and thermoelectric power $Q$ of binary liquid alloys, one obtains theoretical values of ${\ensuremath{\rho}}_{R}$ and $Q$ which decrease slightly with increasing temperature in agreement with the experimental results of Roll and Motz and Howe, respectively.