However there ways such as serial body temperature measuring, along with kits that measures the level of hormones in the urine in order to estimate the time of the coming ovulation, and help in timing intercourse.You may read more about it here (www.mayoclinic.com/health/ovulation-signs/AN...
the abstract continuation theorem of k-set contractive operator and some analysis techniques,the authors study the existence of periodic solutions for a kind of second order functional differential equations with deviating arguments.The results improve and extend the main results of the papers[1-2].do...
A class of second order non-autonomous Hamiltonian systems with asymptotically quadratic conditions is considered in this paper. Using Fountain Theorem, on... P Liu,F Guo - 《数学学报(英文版)》 被引量: 0发表: 2020年 Existence of Periodic Solution for a Class of Symmetric Superquadratic Second...
Periodic mesoporous benzene-silica and thiophene-silica with two dimensional (2D) p 6 mm symmetry were synthesized in the presence of a nonionic poly(ethylene oxide)-poly( dl -lactic acid-co-glycolic acid)-poly(ethylene oxide) (PEO-PLGA-PEO) block copolymer template using aluminum chloride hexah...
We prove that a standard second order finite difference uniform space discretization of the semilinear wave equation with periodic boundary conditions, ana... M Oliver,M West,C Wulff - 《Numerische Mathematik》 被引量: 65发表: 2004年 Approximate analysis for relative motion of satellite formation ...
We prove the existence of periodic solutions for non-autonomous second order systems with p-Laplacian. Our main tools are the minimax methods in critical... Z Wang,J Zhang - 《Electronic Journal of Differential Equations》 被引量: 61发表: 2009年 Periodic and homoclinic solutions generated by im...
Motivated by the periodic behaviour of regulatory networks within cell biology and neurology, we have studied the periodic solutions of piecewise-linear, first- order differential equations with identical relative decay rates. The flow of the solution trajectories can be represented qualitatively by a di...
P(t) With No 2-Periodic 来自 Citeseer 喜欢 0 阅读量: 8 作者: SD Miklaszewski 摘要: The Mawhin conjecture - that there exists a 2#-periodic p : R C such that z = z + p(t)hasno2#-periodic solutions - is confirmed by the use of Fourier expansions. 年份: 2007 ...
Reducing Inventory Costs and Choosing Suppliers with Order Splitting Splitting orders among several suppliers is a common business practice. Two earlier studies pointed out that, when splitting an order between two suppliers... Long-Geng,Zhao,Hon-Shiang,... - 《Journal of the Operational Research ...
A new type of responses called as periodic-chaotic motion is found by numerical simulations in a Duffing oscillator with a slowly periodically parametric excitation. The periodic-chaotic motion is an attractor, and simultaneously possesses the feature of