4,830 research outputs found

    Awareness regarding female breast cancer in Kashmiri males - A study

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    Breast cancer is a major killer disease in females globally and in developing regions, where the early cancer detection facilities are unavailable, prognosis is even worse. Awareness about this disease can lead to early detection and thereby decrease the morbidity and mortality. A self designed questionnaire was used to study the level of awareness regarding breast cancer among males. The questionnaire had 15 questions and on the basis on score attained, the subjects were classified as having poor, average or good breast cancer awareness. Out of 624 participants, 555(89%) had poor breast cancer awareness and 47(7.5%) had average awareness. Only 22 (3.5%) had good awareness about breast cancer. The level of awareness regarding female breast cancer in Kashmiri males is very low. Measures need to be taken to spread awareness about this disease in males so that they can play a vital role in early detection of this disease

    Integral mean estimates for the polar derivative of a polynomial

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    Let P(z) P(z) be a polynomial of degree n n having all zeros in zk|z|\leq k where k1,k\leq 1, then it was proved by Dewan \textit{et al} that for every real or complex number α\alpha with αk|\alpha|\geq k and each r0r\geq 0 n(αk){02πP(eiθ)rdθ}1r{02π1+keiθrdθ}1rMaxz=1DαP(z). n(|\alpha|-k)\left\{\int\limits_{0}^{2\pi}\left|P\left(e^{i\theta}\right)\right|^r d\theta\right\}^{\frac{1}{r}}\leq\left\{\int\limits_{0}^{2\pi}\left|1+ke^{i\theta}\right|^r d\theta\right\}^{\frac{1}{r}}\underset{|z|=1}{Max}|D_\alpha P(z)|. \indent In this paper, we shall present a refinement and generalization of above result and also extend it to the class of polynomials P(z)=anzn+ν=μnanνznν,P(z)=a_nz^n+\sum_{\nu=\mu}^{n}a_{n-\nu}z^{n-\nu}, 1μn,1\leq\mu\leq n, having all its zeros in zk|z|\leq k where k1k\leq 1 and thereby obtain certain generalizations of above and many other known results.Comment: 8 page

    Lp mean estimates for an operator preserving inequalities between polynomials

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    If P(z)P(z) be a polynomial of degree at most nn which does not vanish in z<1|z| < 1, it was recently formulated by Shah and Liman \cite[\textit{Integral estimates for the family of BB-operators, Operators and Matrices,} \textbf{5}(2011), 79 - 87]{wl} that for every R1R\geq 1, p1p\geq 1, B[Pσ](z)pRnΛn+λ01+zpP(z)p,\left\|B[P\circ\sigma](z)\right\|_p \leq\frac{R^{n}|\Lambda_n|+|\lambda_{0}|}{\left\|1+z\right\|_p}\left\|P(z)\right\|_p, where BB is a Bn \mathcal{B}_{n}-operator with parameters λ0,λ1,λ2\lambda_{0}, \lambda_{1}, \lambda_{2} in the sense of Rahman \cite{qir}, σ(z)=Rz\sigma(z)=Rz and Λn=λ0+λ1n22+λ2n3(n1)8\Lambda_n=\lambda_{0}+\lambda_{1}\frac{n^{2}}{2} +\lambda_{2}\frac{n^{3}(n-1)}{8}. Unfortunately the proof of this result is not correct. In this paper, we present a more general sharp LpL_p-inequalities for Bn\mathcal{B}_{n}-operators which not only provide a correct proof of the above inequality as a special case but also extend them for 0p<1 0 \leq p <1 as well.Comment: 16 Page

    Power beaming options

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    Some large scale power beaming applications are proposed for the purpose of stimulating research. The first proposal is for a combination of large phased arrays on the ground near power stations and passive reflectors in geostationary orbit. The systems would beam excess electrical power in microwave form to areas in need of electrical power. Another proposal is to build solar arrays in deserts and beam the energy around the world. Another proposal is to use lasers to beam energy from earth to orbiting spacecraft
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