Results 1 to 10 of about 2,590,403 (163)
On the Period Function of Liénard Systems
Journal of Differential Equations, 1999 AbstractWe study the period functionTof a centerOof a Liénard system. A sufficient condition for the monotonicity ofT, or for the isochronicity ofO, is given. Such a condition is also necessary whenfandgare analytic, andgis odd. In this case a characterization of isochronous centers of Liénard systems is given.
Marco Sabatini
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Long term renal function following selective angioembolization for iatrogenic vascular lesions after partial nephrectomy: A matched case-control study [PDF]
Investigative and Clinical Urology, 2021 Purpose: Partial nephrectomy is associated with a 1%–2% risk of renal iatrogenic vascular lesion (IVL) that are commonly treated with selective angioembolization (SAE).
Ragheed Saoud +6 more
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S-shaped bifurcations in a two-dimensional Hamiltonian system
Electronic Journal of Qualitative Theory of Differential Equations, 2021 We study the solutions to the following Dirichlet boundary problem: \begin{equation*}\frac{d^2x(t)}{dt^2}+\lambda f(x(t))=0,\end{equation*} where $x \in \mathbb{R}$, $t \in \mathbb{R}$, $\lambda \in \mathbb{R}^+$, with boundary conditions: \begin ...
Andre Zegeling, Paul Zegeling
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Period function of planar turning points
Electronic Journal of Qualitative Theory of Differential Equations, 2021 This paper is devoted to the study of the period function of planar generic and non-generic turning points. In the generic case (resp. non-generic) a non-degenerate (resp.
Renato Huzak, David Rojas
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Pengaruh Karakteristik Individu terhadap Fungsi Paru pada Petugas Penyapu Jalanan
Jurnal Kesehatan, 2021 The increase in the number of vehicles in Samarinda City occurs significantly every year this has the potential to decrease environmental quality, namely air pollution.
Hansen Hansen, Deddy Alif Utama
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Multi-period uncertain portfolio selection model with prospect utility function
PLoS ONE, 2022 In this paper, we discuss a multi-period portfolio optimization problem based on uncertainty theory and prospect theory. We propose an uncertain multi-period portfolio selection model, in which the return utility and risk of investment are measured by ...
Gaohuizi Guo, Yao Xiao, Cuiyou Yao
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Monetary Reaction Function in Indonesia During Inflation Targeting Period
Jurnal Ekonomi dan Studi Pembangunan, 2023 This study analyzes the monetary reaction function with shocks and the fear of floating phenomenon in the inflation targeting period in Indonesia. This study uses a new neoclassical synthesis approach.
Aloysius Deno Hervino +3 more
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International Journal of Mathematics and Mathematical Sciences, 1980 We show that any mean‐periodic function f can be represented in terms of exponential‐polynomial solutions of the same convolution equation f satisfies, i.e., u∗f = 0(μ ∈ E′(ℝn)). This extends to n‐variables the work of L. Schwartz on mean‐periodicity and also extends L.
Carlos A. Berenstein, B. A. Taylor
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SIMPLE APPROACH OF THE SERVER’S BUSY PERIOD FOR SELFSERVICE SYSTEM WITH FEEDBACK [PDF]
Delta Journal of Science, 2019 In this paper, we provide an easy method to obtain thedistribution of busy period for self-service queue with feedback. Usingprobability generating function we obtain the probability that there are nunits in the system at time t , pn ( t ) and the ...
S. E. Abou Karam, K. A. M. Kotb
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World population aging as a function of period demographic conditions
Demographic Research, 2023 Background: Population aging is a fundamental element of the demographic transition. In the absence of births, deaths, and migration, the mean age of any population will increase one year per calendar year.
Fernando Fernandes +2 more
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