• Title/Summary/Keyword: $\phi$ -q-n

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EXTINCTION AND NON-EXTINCTION OF SOLUTIONS TO A FAST DIFFUSIVE p-LAPLACE EQUATION WITH A NONLOCAL SOURCE

  • Han, Yuzhu;Gao, Wenjie;Li, Haixia
    • Bulletin of the Korean Mathematical Society
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    • v.51 no.1
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    • pp.55-66
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    • 2014
  • In this paper, the authors establish the conditions for the extinction of solutions, in finite time, of the fast diffusive p-Laplace equation $u_t=div({\mid}{\nabla}u{\mid}^{p-2}{\nabla}u)+a{\int}_{\Omega}u^q(y,t)dy$, 1 < p < 2, in a bounded domain ${\Omega}{\subset}R^N$ with $N{\geq}1$. More precisely, it is shown that if q > p-1, any solution vanishes in finite time when the initial datum or the coefficient a or the Lebesgue measure of the domain is small, and if 0 < q < p-1, there exists a solution which is positive in ${\Omega}$ for all t > 0. For the critical case q = p-1, whether the solutions vanish in finite time or not depends crucially on the value of $a{\mu}$, where ${\mu}{\int}_{\Omega}{\phi}^{p-1}(x)dx$ and ${\phi}$ is the unique positive solution of the elliptic problem -div(${\mid}{\nabla}{\phi}{\mid}^{p-2}{\nabla}{\phi}$) = 1, $x{\in}{\Omega}$; ${\phi}(x)$=0, $x{\in}{\partial}{\Omega}$. This is a main difference between equations with local and nonlocal sources.

$\phi$-q-n Pattern of XLPE Cable with Treeing Propagation (트리진전에 따른 XLPE Cable의 $\phi$-q-n 패턴)

  • Lee, Jong-Chan;Jung, Byung-Sun;Cho, Kyu-Bok;Park, Dae-Hee
    • Proceedings of the KIEE Conference
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    • 1999.07e
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    • pp.2396-2398
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    • 1999
  • In this paper, inception and propagation of electrical tree and properties of partial discharge (PD) properties accompanying with tree in XLPE were discussed. The process of electrical tree using CCD camera and investigated the statistical characteristics of the PD properties by $\phi$-q-n pattern were observed. The statistical operators used were asymmetry and skewness.

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On Generalized 𝜙-recurrent Kenmotsu Manifolds with respect to Quarter-symmetric Metric Connection

  • Hui, Shyamal Kumar;Lemence, Richard Santiago
    • Kyungpook Mathematical Journal
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    • v.58 no.2
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    • pp.347-359
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    • 2018
  • A Kenmotsu manifold $M^n({\phi},\;{\xi},\;{\eta},\;g)$, (n = 2m + 1 > 3) is called a generalized ${\phi}-recurrent$ if its curvature tensor R satisfies $${\phi}^2(({\nabla}_wR)(X,Y)Z)=A(W)R(X,Y)Z+B(W)G(X,Y)Z$$ for all $X,\;Y,\;Z,\;W{\in}{\chi}(M)$, where ${\nabla}$ denotes the operator of covariant differentiation with respect to the metric g, i.e. ${\nabla}$ is the Riemannian connection, A, B are non-vanishing 1-forms and G is given by G(X, Y)Z = g(Y, Z)X - g(X, Z)Y. In particular, if A = 0 = B then the manifold is called a ${\phi}-symmetric$. Now, a Kenmotsu manifold $M^n({\phi},\;{\xi},\;{\eta},\;g)$, (n = 2m + 1 > 3) is said to be generalized ${\phi}-Ricci$ recurrent if it satisfies $${\phi}^2(({\nabla}_wQ)(Y))=A(X)QY+B(X)Y$$ for any vector field $X,\;Y{\in}{\chi}(M)$, where Q is the Ricci operator, i.e., g(QX, Y) = S(X, Y) for all X, Y. In this paper, we study generalized ${\phi}-recurrent$ and generalized ${\phi}-Ricci$ recurrent Kenmotsu manifolds with respect to quarter-symmetric metric connection and obtain a necessary and sufficient condition of a generalized ${\phi}-recurrent$ Kenmotsu manifold with respect to quarter symmetric metric connection to be generalized Ricci recurrent Kenmotsu manifold with respect to quarter symmetric metric connection.

Subclasses of Starlike and Convex Functions Associated with Pascal Distribution Series

  • Frasin, Basem Aref;Swamy, Sondekola Rudra;Wanas, Abbas Kareem
    • Kyungpook Mathematical Journal
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    • v.61 no.1
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    • pp.99-110
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    • 2021
  • In the present paper, we determine new characterisations of the subclasses ����∗��(α, β; γ) and ������(α, β; γ) of analytic functions associated with Pascal distribution series ${\Phi}^m_q(z)=z-{\sum_{n=2}^{\infty}}(^{n+m-2}_{m-1})q^{n-1}(1-q)^mz^n$. Further, we give necessary and sufficient conditions for an integral operator related to Pascal distribution series ${\mathcal{G}}^m_qf(z)={\int_{0}^{z}}{\frac{{\Phi}^m_q(t)}{t}}dt$ to belong to the above classes. Several corollaries and consequences of the main results are also considered.

Recognition of PD Pattern in GIS using Neural Network (신경회로망을 이용한 GIS내 PD 패턴 인식)

  • Lee, Dong-Zoon;Ryu, Sung-Sic;Shin, Dong-Seok;Kwak, Hee-Ro
    • Proceedings of the KIEE Conference
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    • 2000.07c
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    • pp.1837-1839
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    • 2000
  • This paper describes PD patterns in GIS recognized by using neural network proposed in this paper PD sources in GIS were classified by four states and PD signals were expressed by $\Phi-Q$ distribution, ${\Phi]-Q_m$ distribution, $\Phi-N$ distribution and Q-N distribution. Then statistical operators were extracted from each distributions. As a result, the PD pattern recognizing rate in GIS using neural network proposed in this paper was increased.

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Recognition of PD Sources in GIS using Fuzzy (Fuzzy를 이용한 GIS내 PD Source 인식)

  • Lee, Dong-Zoon;Song, Hyun-Seok;Kwak, Hee-Ro
    • Proceedings of the KIEE Conference
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    • 2001.07c
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    • pp.1700-1702
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    • 2001
  • This paper describes that PD sources in GIS were recognized using fuzzy algorithm proposed in this paper. PD sources were classified by four states and PD signals were expressed by $\phi$-q distribution. $\phi$-N distribution and Q-N distribution. Then statistical operators were extracted from each distributions. As a result, the rate of recognizing PD sources in GIS using fuzzy algorithm proposed in this paper was 93[%].

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EXISTENCE OF THE SOLUTION OF COUNTABLY INFINITE SYSTEM OF DIFFERENTIAL EQUATIONS IN SEQUENCE SPACES mp(𝜙) AND np(𝜙) WITH THE HELP OF MEASURE OF NON-COMPACTNESS

  • KHAN, MOHD SHOAIB;UDDIN, IZHAR;LOHANI, Q.M. DANISH
    • Journal of applied mathematics & informatics
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    • v.37 no.5_6
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    • pp.329-339
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    • 2019
  • The Banach spaces $m^p(\phi)$ and $n^p(\phi)$ are very important sequence spaces related to $l_p$, which were defined to fill the gaps between $l_p(1{\leq}p{\leq}{\infty})$. In this paper, we investigated the solubility of the infinite system of differential equations in $m^p(\phi)$ and $n^p(\phi)$ by proving related theorems. Moreover, one example has been included for the justification of the claim of this paper.

Analysis of Partial Discharge Pattern in XLPE/EDPM Interface Defect using the Cluster (군집화에 의한 XLPE/EPDM 계면결함 부분방전 패턴 분석)

  • Cho, Kyung-Soon;Lee, Kang-Won;Shin, Jong-Yeol;Hong, Jin-Woong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.11a
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    • pp.203-204
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    • 2007
  • This paper investigated the influence on partial discharge distribution of various defects at the model power cable joints interface using K-means clustering. As the result of analyzing discharge number distribution of ${\Phi}-n$ cluster, clusters shifted to $0^{\circ}\;and\;180^{\circ}$ with increasing applying voltage. It was confirmed that discharge quantity and euclidean distance between centroids were increased with applying voltage from the analyzing centroid distribution of ${\Phi}-q$ cluster. The degree of dispersion was increased with calculating standard deviation of ${\Phi}-q$ cluster centroid. The tendency both number of discharge and mean value of ${\Phi}-q$ cluster centroid were some different with defect types.

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