1) Strong damping terms
强阻尼项
2) damping term
阻尼项
1.
The global existence of solution to the initial-boundary value problem of a nonlinear fourth-order wave equation with a damping term and a force source term was proved based on the standard semigroup theory and by introducing a modified energy function.
根据半群理论,引进修改的能量函数,证明了具有阻尼项和力源项的四阶波动方程的初边值问题解的整体存在性。
2.
In this paper, a class of the oscillation theorems for second order nonlinear differential equation with damping term are investigated.
在文献[1]的基础上,利用积分平均和完全平方技巧,研究了一类带有阻尼项的二阶非线性微 分方程的振动性,获得了该方程解的振动性的一个充分条件,实例验证表明,其结果改进和推广了现有 文献中的结论。
3.
The sign relation of the now-oscillatory solutions and their derived functions of the first,the second and the third order is used,which belongs to a class of fourth order lmpulses differential equations with damping term.
利用一类带阻尼项的四阶脉冲微分方程的非振动解与其各阶导数的符号关系(阶数≤3),得到其振动性的判别准则,并举例说明准则的有效性。
3) damping
[英]['dæmpiŋ] [美]['dæmpɪŋ]
阻尼项
1.
This paper obtains a new oscillation theorem of high-order differential equation with damping.
本文建立了具有阻尼项的高阶微分方程新的振动定理。
4) damped terms
阻尼项
1.
Oscillation of solutions of nonlinear hyperbolic differential equation with continuous deviating arguments and damped terms
含连续时滞和阻尼项的非线性双曲微分方程解的振动性
2.
We study the oscillation of the solutions of systems of hyperbolic partial differential equations with continuous delay argument and damped terms.
研究了一类含连续分布滞量和阻尼项的非线性双曲型偏微分方程组运用黎卡提变换获得了该方程组在两类边值条件下解振动的充分条件。
3.
This paper studies oscillation of the solutions of hyperbolic partial differential equation with continuous delay arguments and damped terms.
研究了一类具有连续分布滞量含阻尼项的非线性双曲型偏微分方程~2u(x,t)/t~2+p(t)u(x,t)/t+A(x,t)u(x,t)+sum from i=1 to m_1( )∫_a~bB_i(x,t,τ)f_i(u(x,r_1(t,τ)))dm(τ)=C(t)Δu(x,t)+sum from j=1 to m_2( )∫_a~bD_j(t,τ)Δu(x,r2(t,τ))dm(τ),获得了该方程在两类边值条件下解振动的充分条件。
5) damped term
阻尼项
1.
Consider the second order nonlinear differential equation with damped terms x″(t)+p(t)x′(t)+q(t)f(x(t)) =0,where t≥t 0, p,q∈C[t 0,∞ ) are allowed to change their signs, f∈C(R ), and xf(x)> 0 for x ≠0.
考虑带有阻尼项的二阶非线性微分方程x″(t) + p(t)x′(t) + q(t) f(x(t) ) =0 ,t≥t0 ,其中 p ,q∈C[t0 ,∞ )允许变号 ,f∈C(R) ,且当x≠ 0时xf(x) >0 。
2.
This paper investigate a class of higher order functional differential equations with damped term, and derive two new oscillatory criteria of solution.
研究了一类具有阻尼项的高阶泛函微分方程的振动性,得到了两个新的解的振动准则,所得结果推广了一些文献中的振动定理。
3.
In this paper,we studied oscillation of the solutions of neutral hyperbolic partial differential equations with nonlinear diffusion coefficient and damped terms.
研究了一类具非线性扩散系数和阻尼项的双曲型偏微分方程系统2ui(x,t)/t2+m(t)ui(x,t)/t=ai(t)hi(ui)Δui+sum from j=1 to n aij(t)hij(ui(x,t-τj(t)))Δui(x,t-τj(t))-sum from k=1 to m bik(x,t)uk(x,t-σ(t))(x,t)∈Ω×R+≡G,i=1,2,…m,获得了该方程组在Robin边值条件下解振动的充分条件。
6) damping
[英]['dæmpiŋ] [美]['dæmpɪŋ]
带阻尼项
1.
In this paper,some new oscillation criteria are established for certain forced second-order nonlinear differential equation with damping,which improve and extend some rencent results.
主要研究一类带阻尼项及强迫项的二阶非线性微分方程的振动性问题,建立了新的判据,推广和改进了已有的结果。
补充资料：头项强痛
头项强痛 头项强痛 证名。头项部牵强不舒作痛。见《伤寒论·太阳病脉证并治》：“太阳之为病，脉浮，头项强痛而恶寒。”多因邪在肌肤或遏阻经络所致。外感表证，宜发散解表。如久病项强，多属痹证，宜祛风化湿、蠲痹通络。又痉病初起，亦常有头痛项强，症情较重，治宜镇痉熄风为主。本证可见于某些神经系统感染性疾患及颈椎病等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条