Results 91 to 100 of about 2,039,640 (315)
Multiple positive solutions for second order impulsive differential equation
Electronic Journal of Qualitative Theory of Differential Equations, 2013 We investigate the existence of at least three positive solutions to a three-point boundary value problem of second order impulsive differential equation. Our analysis rely on the Avery-Peterson fixed point theorem in a cone.
Weihua Jiang, Qiang Zhang, Weiwei Guo
doaj +1 more source
Positive Solutions of Superlinear Elliptic Equations
Journal of Functional Analysis, 1999 Let \(\Omega\subset \mathbb{R}^N\) be a bounded convex domain with smooth boundary \(\Omega\) and \(f: \mathbb{R}^+\to \mathbb{R}\) be a locally Lipschitz continuous function with \(f(0)\geq 0\). The elliptic problems \[ -\Delta u= f(u),\quad u>0,\quad x\in\Omega,\quad u= 0,\quad x\in\partial\Omega;\tag{1} \] and \[ -\Delta u=\lambda f(u),\quad u>0 ...
openaire +2 more sources
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
, 1990 In this paper we describe a unified scheme for implementing an interior point algorithm (IPM) over a range of computer architectures. In the inner iteration of the IPM a search direction is computed using Newton's method.
Levkovitz, R +7 more
core
, 2021 Under the umbrella term "positive computing" concepts of positive psychology are transferred to the domain of human-computer interaction (HCI). In an interdisciplinary community psychologist, computer scientists, designers and others are exploring ...
Sarah Diefenbach
core
Even number of positive solutions for 3nth order three-point boundary value problem on time scales
Electronic Journal of Qualitative Theory of Differential Equations, 2011 We establish the existence of at least two positive solutions for the 3nth order three-point boundary value problem on time scales by using Avery-Henderson fixed point theorem.
K. Prasad, N. Sreedhar
doaj +1 more source
Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?
FEBS Letters, EarlyView.This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes +3 more
wiley +1 more source
Positive Almost Periodic Solution on a Nonlinear Differential Equation
, 2011 We study the following nonlinear equationdx(t)/dt=x(t)[a(t)-b(t)xα(t)-f(t,x(t))]+g(t), by using fixed point theorem, the sufficient conditions of the existence of a unique positive almost periodic solution for above system are obtained, by using the ...
Tian Li-xin, Ni Hua, Liu Xun
core +1 more source
Optimal solution characterization for infinite positive semi-definite programming [PDF]
, 1994 We give a set-theoretic description of the set of optimal solutions to a general positive semi-definite quadratic programming problem over an affine set.
J.C. Bean +13 more
core +1 more source
Electronic Journal of Qualitative Theory of Differential Equations, 2016 We study a variational property on the evolutionary bifurcation curves for the one-dimensional perturbed Gelfand problem from combustion theory \begin{equation*} \begin{cases} u^{\prime \prime }(x)+\lambda \exp \left( \frac{au}{a+u}\right) =0, & -10$ is ...
Shao-Yuan Huang, Shin-Hwa Wang
doaj +1 more source