Mining High Dimensional Web Content With Sentimental Analysis: A Proactive Approach

Sentiment analysis or opinion mining has a humongous scope in the field of digital marketing. Many research ideas have evolved in this field of engineering over the past decades. The major task of proposing sentiment analysis in mining is to systematize the detection of opinions, attitudes and the feelings expressed. These approaches however have some setback in certain scenarios. Rather than directly expressing the feelings sometimes a person might use diverse strategies to express emotions which might be positive, negative or neutral. One word which was viewed positive in a scenario might be regarded as negative in another situation. Such circumstances would interrogate the reliability of sentimental analysis. Our researches aim at alleviating the challenges in sentimental analysis and deliver a tool that is effective and reliable

Indian railway track analysis for displacement and vibration pattern estimation

This paper presents the dynamic response of the Indian Railway track. Two track models are considered for the dynamic response in terms of vertical displacement and acceleration at different wheel speeds, keeping the moving point load at constant magnitude. The rail is treated as a beam either on viscoelastic foundation or on the discrete elastic support system. The governing equation is implemented in finite element analysis using ANSYS 14.0. For the validation of result from system equation are compared with those available in published literature and the maximum deviation for displacement at the midpoint of rail is found to be within 5 %. Different wheel speed generates variation in displacement and acceleration of the rail track. The study can be viewed as the foundation for the comparison of FEA based simulation of rail track to specify its dynamic response useful to provide better safety and comfort to commuters

Physicochemical and biological studies of a new erythromycin derivate - erythromycin folate

Se preparó un derivado nuevo de la eritromicina, el folato de eritromicina, y se evaluaron sus propiedades fisicoquímicas y biológicas. El derivado presenta una buena solubilidad en metanol, etanol y propileno glicol. Los valores de los coeficientes de partición, que fueron 1,12 y 1,10 en sistemas de cloroformo/agua y octanol/agua respectivamente, indican que probablemente se distribuya bien in vivo. La potencia in vitro del derivado, 716 μg/mg, es mayor que la de derivados existentes como el estolato de eritromicina, el estearato de eritromicina, el etil sucinato de eritromicina, el gluceptato de eritromicina y el lactobionato de eritromicina. Las concentraciones inhibitorias mínimas in vitro del derivado son menores que las de la base frente a Klebsiella pneumonia, Pseudomonas aeruginasa, Bacillus pumilis y Escherichia coli. Los parámetros farmacocinéticos in vivo del derivado en conejos son los siguientes: la vida media de eliminación, t½ es de 117,45 min. para el derivado y de 150,45 min. para la base de eritromicina utilizada como estándar de referencia. El volumen de distribución Vd del derivado y de la base de eritromicina es de 177,56 % y 352,20 % respectivamente. Los resultados de la investigación indican que el folato de eritromicina tiene un gran potencial en aplicaciones clínicas posibles.A new derivative of erythromycin, Erythromycin folate was prepared and its physicochemical and biological properties were evaluated. The derivative has good solubility in methanol, ethanol and propylene glycol. The partition coefficient values of 1.12 and 1.10 in chloroform/water and octanol/water systems respectively indicate that the derivative will probably distribute well in vivo. The in vitro potency of the derivative, 716 μg/mg, is higher than the existing derivatives like erythromycin estolate, erythromycin stearate, erythromycin ethyl succinate, erythromycin gluceptate, and erythromycin lactobionate. The in vitro Minimum Inhibitory Concentrations are less for the derivative than the base against Klebsiella pneumonia, Pseudomonas aeruginasa, Bacillus pumilis and Escherichia coli. The in vivo pharmacokinetic parameters of the derivative in rabbits are as follows: the elimination half life, t½ is 117.45 min for the derivative while it is 150.45 min for erythromycin base the reference standard. The volume of distribution Vd is 177.56% and 352.20% for the derivative and erythromycin base respectively. The results of the present investigations indicate that erythromycin folate has a high potential for possible clinical application.La University Grants Commission (UGC) de la India ha financiado este proyect

Effect of FCNC mediated Z boson on lepton flavor violating decays

We study the three body lepton flavor violating (LFV) decays $\mu^- \to e^- e^+ e^-$, $\tau^- \to l_i^- l_j^+ l_j^-$ and the semileptonic decay $\tau \to \mu \phi$ in the flavor changing neutral current (FCNC) mediated $Z$ boson model. We also calculate the branching ratios for LFV leptonic B decays, $B_{d,s} \to \mu e$, $B_{d,s} \to \tau e$, $B_{d,s} \to \tau \mu$ and the conversion of muon to electron in Ti nucleus. The new physics parameter space is constrained by using the experimental limits on $\mu^- \to e^- e^+ e^-$ and $\tau^- \to \mu^- \mu^+ \mu^-$. We find that the branching ratios for $\tau \to eee$ and $\tau \to \mu \phi$ processes could be as large as $\sim {\cal O}(10^{-8})$ and ${\rm Br}B_{d,s} \to \tau \mu, \tau e) \sim {\cal O}(10^{-10})$. For other LFV B decays the branching ratios are found to be too small to be observed in the near future.Comment: 15 pages, 8 figures, typos corrected, one more section added, version to appear in EPJ

SM with four generations: Selected implications for rare B and K decays

We extend our recent work and study implications of the Standard Model with four generations (SM4) for rare B and K decays. We again take seriously the several 2-3 $\sigma$ anomalies seen in B, $B_s$ decays and interpret them in the context of this simple extension of the SM. SM4 is also of course of considerable interest for its potential relevance to dynamical electroweak symmetry breaking and to baryogenesis. Using experimental information from processes such as $B \to X_s \gamma$, $B_d$ and $B_s$ mixings, indirect CP-violation from $K_L \to \pi \pi$ etc along with oblique corrections, we constrain the relevant parameter space of the SM4, and find $m_{t'}$ of about 400-600 GeV with a mixing angle $| V_{t'b}^*V_{t's}|$ in the range of about (0.05 to 1.4)$\times 10^{-2}$ and with an appreciable CP-odd associated phase, are favored by the current data. Given the unique role of the CP asymmetry in $B_s \to \psi \phi$ due to its gold-plated nature, correlation of that with many other interesting observables, including the semileptonic asymmetry ($A_{SL}$) are studied in SM4. We also identify several processes, such as $B \to X_s \nu \bar\nu$, $K_L \to \pi^0 \nu \bar \nu$ etc, that are significantly different in SM4 from the SM. Experimentally the very distinctive process $B_s\to \mu^+\mu^-$ is also discussed; the branching ratio can be larger or smaller than in SM, $(3.2 \to 4.2)\times 10^{-9}$, by a factor of ${\cal{O}}(3)$.Comment: v2: 49 pages, 20 eps figures, Corrected some typos, added few references and minor changes with regard to direct CP in K pi. Also some added information to facilitate direct comparison with Buras et al, arXiv:1002.2126

Constraints on the nonuniversal Z^\prime couplings from B\to\pi K, \pi K^{\ast} and \rho K Decays

Motivated by the large difference between the direct CP asymmetries $A_{CP}(B^-\to \pi^0 K^-)$ and $A_{CP}(\bar{B}^{0}\to \pi^{+} K^{-})$, we combine the up-to-date experimental information on $B\to\pi K$, $\pi K^{\ast}$ and $\rho K$ decays to pursue possible solutions with the nonuniversal $Z^{\prime}$ model. Detailed analyses of the relative impacts of different types of couplings are presented in four specific cases. Numerically, we find that the new coupling parameters, $\xi^{LL}$ and $\xi^{LR}$ with a common nontrivial new weak phase $\phi_L\sim-86^{\circ}$, which are relevant to the $Z^{\prime}$ contributions to the electroweak penguin sector $\triangle C_9$ and $\triangle C_7$, are crucial to the observed "$\pi K$ puzzle". Furthermore, they are found to be definitely unequal and opposite in sign. We also find that $A_{CP}(B^-\to \rho^0 K^-)$ can put a strong constraint on the new $Z^{\prime}$ couplings, which implies the $Z^{\prime}$ contributions to the coefficient of QCD penguins operator $O_3$ involving the parameter $\zeta^{LL}$ required.Comment: 27 pages, 6 figures. References and a note adde

Double-Lepton Polarization Asymmetries and Branching Ratio in B \rar K_{0}^{*}(1430) l^+ l^- transition from Universal Extra Dimension Model

We investigate the B \rar K_{0}^{*}(1430) l^+ l^- transition in the Applequist-Cheng-Dobrescu model in the presence of a universal extra dimension. In particular, we calculate double lepton polarization asymmetries and branching ratio related to this channel and compare the obtained results with the predictions of the standard model. Our analysis of the considered observables in terms of radius $R$ of the compactified extra-dimension as the new parameter of the model show a considerable discrepancy between the predictions of two models in low $\frac{1}{R}$ values.Comment: 12 Pages, 15 Figures and 1 Tabl

Goldstone Bosons in Effective Theories with Spontaneously Broken Flavour Symmetry

The Flavour Symmetry of the Standard Model (SM) gauge sector is broken by the fermion Yukawa couplings. Promoting the Yukawa matrices to scalar spurion fields, one can break the flavour symmetry spontaneously by giving appropriate vacuum expectation values (VEVs) to the spurion fields, and one encounters Goldstone modes for every broken flavour symmetry generator. In this paper, we point out various aspects related to the possible dynamical interpretation of the Goldstone bosons: (i) In an effective-theory framework with local flavour symmetry, the Goldstone fields represent the longitudinal modes for massive gauge bosons. The spectrum of the latter follows the sequence of flavour-symmetry breaking related to the hierarchies in Yukawa couplings and flavour mixing angles. (ii) Gauge anomalies can be consistently treated by adding higher-dimensional operators. (iii) Leaving the U(1) factors of the flavour symmetry group as global symmetries, the respective Goldstone modes behave as axions which can be used to resolve the strong CP problem by a modified Peccei-Quinn mechanism. (iv) The dynamical picture of flavour symmetry breaking implies new sources of flavour-changing neutral currents, which arise from integrating out heavy scalar spurion fields and heavy gauge bosons. The coefficients of the effective operators follow the minimal-flavour violation principle.Comment: 27 pages, abstract and introduction extended, more detailed discussion of heavy gauge boson spectrum and auxiliary heavy fermions, outline restructured. Matches version to be published in JHE