共查询到20条相似文献,搜索用时 31 毫秒
1.
regulation of the muscle length and the arm of muscular force when the hip was at standard anatomic attitude and in the whole distance range with exercise.Result enunciation: In regard to the machine axes of lower extr 相似文献
2.
VIJAY KUMAR SOHANI 《Proceedings Mathematical Sciences》2013,123(4):525-537
We obtain homogeneous Strichartz estimate for the Schrödinger propagator e $^{-itL_{\alpha}}$ for the Laguerre operator L α on ${\mathbb R}_+^n$ . We follow regularization technique as introduced in J. Funct. Anal. 224(2) (2005) 371–385. We also establish inhomogeneous Strichartz estimates for different admissible pairs. 相似文献
3.
We consider the M/M/ queue with arrival rate , service rate and traffic intensity =/. We analyze the first passage distribution of the time the number of customers N(t) reaches the level c, starting from N(0)=m>c. If m=c+1 we refer to this time period as the congestion period above the level c. We give detailed asymptotic expansions for the distribution of this first passage time for , various ranges of m and c, and several different time scales. Numerical studies back up the asymptotic results. 相似文献
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5.
Yi-Chiuan CHEN 《数学年刊B辑(英文版)》2007,28(2):219-224
The embedding of the Bernoulli shift into the logistic map x→μx(1- x) forμ> 4 is reinterpreted by the theory of anti-integrability: it is inherited from the anti-integrable limitμ→∞. 相似文献
6.
Ines Kamoun Fathallah 《Applicable analysis》2013,92(7):899-914
In this article we study, in dimension n?≥?3, the inverse problem of determining the potential q of the Schrödinger equation from infinity measurements on any open subset Γ0 of the boundary. Provided that q is known in a neighborhood of the boundary, we prove the logarithmic stability estimate. 相似文献
7.
Jie WANG Center of Mathematical Sciences Zhejiang University Hangzhou China 《中国科学A辑(英文版)》2007,50(11)
We obtain the Harnack estimate of the solution to H~k-flow in Euclidean space R~(n 1),for k>0.By using this estimate,we get some corollaries about the translation soliton. 相似文献
8.
We study a coupled algorithm for solving the two-dimensional Navier–Stokes equations in the stream function–vorticity variables. The algorithm is based on a finite-difference scheme in which the inertial terms in the vortex transport equation are taken from the lower time layer and the dissipative terms, from the upper time layer. In the linear approximation, we study the stability of this algorithm and use test computations to show its advantages when modeling flows at moderate Reynolds numbers. 相似文献
9.
51.IntroductionLethbeahomeomorphismontherealaxisR,andsatisfyh(lco)=loo.Wecallaquasisymmetricfunction.lfthereexistsa'constantMsuchthatM-1Sp(x,t)SM,x,teR,(l.2)then(1.2)iscalledtheM-condition-Byvirtueoftheclassicresultofpaper[lj,ifp(x,t)sat-isfiestheM-condition,thenthereexistsaK(M')-quasiconformaIextensiononthel1alfplaneH,whichisthewell-knownBeurling-Ahlfors'extension:ytz)=u(x,y) iv(x,y),whereAfterpaper[lj,manyworkshavebeendoneforestimatingK-Particularly,itshouldbere-markedheretl1atM.Leht… 相似文献
10.
Differential Equations - An example of a mixed domain in which the solution of the Tricomi problem is trivial is given. A criterion for the uniqueness of the classical solution of this problem is... 相似文献
11.
Tim Austin 《Israel Journal of Mathematics》2016,211(1):221-238
Let (X, d) be a compact metric space and µ a Borel probability on X. For each N ≥ 1 let d∞N be the ?∞-product on XN of copies of d, and consider 1-Lipschitz functions XN → ? for d∞N. 相似文献
12.
Yu Xiang LI 《数学学报(英文版)》2006,22(2):545-550
We will show in this paper that if A is very close to 1, then
I(M,λ,m) =supu∈H0^1,n(m),∫m|△↓u|^ndV=1∫Ω(e^αn|u|^n/(n-1)-λm∑k=1|αnun/(n-1)|k/k!)dV
can be attained, where M is a compact-manifold with boundary. This result gives a counter-example to the conjecture of de Figueiredo and Ruf in their paper titled "On an inequality by Trudinger and Moser and related elliptic equations" (Comm. Pure. Appl. Math., 55, 135-152, 2002). 相似文献
13.
Totally dissipative measures for the shift and conformal σ-finite measures for the stable holonomies
In this paper we investigate some results of ergodic theory with infinite measures for a subshift of finite type. We give
an explicit way to construct σ-finite measures which are quasi-invariant by the stable holonomy and equivalent to the conditional measures of some σ-invariant measure. These σ-invariant measures are totally dissipative, σ-finite but satisfy a Birkhoff Ergodic-like Theorem. The constructions are done for the symbolic case, but can be extended
for uniformly hyperbolic flows or diffeomorphisms. 相似文献
14.
The paper deal with the asymptotic behavior of the solutions to the initial boundary value problem for unipolar drift diffusion equations for semiconductors. Under the proper assumptions on doping profile and initial value, we prove that the smooth solutions to these evolutionary problems tend to the unique stationary solution exponentially as time tends to infinity. 相似文献
15.
M. Redivo Zaglia 《Numerical Algorithms》1992,3(1):353-369
The -algorithm is an extrapolation algorithm which can be very useful in accelerating some slowly convergent sequences. Like the other acceleration algorithms, the -algorithm is quite sensitive to the propagation of rounding errors due to cancellation in the difference between two almost equal quantities.In order to (partially) avoid this drawback, particular rules are given. They have to be used, instead of the usual rules of the algorithm, when two adjacent quantities in a column are nearly equal. Numerical examples show that these rules can improve the numerical stability of the algorithm in some cases while, in other cases, the improvement is non-existent. 相似文献
16.
Jan Dhaene Carmen Ribas Raluca Vernic 《应用数学学报(英文版)》2006,22(4):543-564
In the actuarial literature,several exact and approximative recursive methods have been proposedfor calculating the distribution of a sum of mutually independent compound Bernoulli distributed randomvariables.In this paper,we give an overview of these methods.We compare their performance with the straight-forward convolution technique by counting the number of dot operations involved in each method.It turns outthat in many practicle situations,the recursive methods outperform the convolution method. 相似文献
17.
Continuous Limit for the Toda Hierarchy 总被引:1,自引:0,他引:1
TherelationbetweentheKdVhierarchyandthecontinuouslimitoftheKac-vanMoerbeke(KvM)hierarchy,whichisthereductionofTodehierarchy,... 相似文献
18.
Nakao HAYASHI Pavel I. NAUMKIN 《数学学报(英文版)》2006,22(5):1441-1456
We study large time asymptotics of solutions to the Korteweg-de Vries-Burgers equation ut+uux-uxx+uxxx=0,x∈R,t〉0. We are interested in the large time asymptotics for the case when the initial data have an arbitrary size. We prove that if the initial data u0 ∈H^s (R)∩L^1 (R), where s 〉 -1/2, then there exists a unique solution u (t, x) ∈C^∞ ((0,∞);H^∞ (R)) to the Cauchy problem for the Korteweg-de Vries-Burgers equation, which has asymptotics u(t)=t^-1/2fM((·)t^-1/2)+0(t^-1/2) as t →∞, where fM is the self-similar solution for the Burgers equation. Moreover if xu0 (x) ∈ L^1 (R), then the asymptotics are true u(t)=t^-1/2fM((·)t^-1/2)+O(t^-1/2-γ) where γ ∈ (0, 1/2). 相似文献
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20.
A K-meson is found to decay at rest into a nearly relativistic secondary particle. The secondary particle produces a nuclear disintegration in flight and is identified as a π-meson of kinetic energy ~ 110 MeV. The event is interpreted as the decay of a θ±-meson according to the scheme:
$$\theta ^ \pm \to \pi ^ \pm + \pi ^0 + (222 \pm 12 MeV.)$$ 相似文献