Resonance and the second BVP

The Dirichlet Bvp for the Second Order Nonlinear Ordinary Differential Equation at Resonance

Efficient sufficient conditions are established for the solvability of the Dirichlet problem u′′(t) = p(t)u(t) + f(t, u(t)) + h(t) for a ≤ t ≤ b, u(a) = 0, u(b) = 0, where h, p ∈ L([a, b];R) and f ∈ K([a, b];R), in the case where the linear problem u′′(t) = p(t)u(t), u(a) = 0, u(b) = 0 has nontrivial solutions. 2000 Mathematics Subject Classification: 34B15, 34C15, 34C25.

efl students gender and socioeconomic status: the use of politeness strategies in the first and second languages

within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...

the effect of task cognitive complexity and time limit on the performance of the learners with different proficiency levels in second language writing skill

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

the effects of collaborative strategic reading and direct instruction in persuasion on iranian second grade of high school students persuasive writing and attitudes

this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...

Bifurcation and Chaos in Coupled BVP oscillators