نتایج جستجو برای: improved y
تعداد نتایج: 933327 فیلتر نتایج به سال:
در این پایان نـامه پایداری هایرز-اولام برای معادله ی تابعی جمعی f(2x+y)+f(2x-y)=4(f(x+y)+f(x-y))-3/7 (f(2y)-2f(2y))+2f(2x)-8f(x) (*) در فضاهای 2-باناخ بررسی می شود و برای این منظور ثابت می کنیم که اگر (x,?.,.?) یک فضای 2-باناخ، ???، p,q>4 و تابع f:x?x به ازای هر x,y,z?x در نامعادله ی زیر صدق کند: ?7[f(2x+y)+f(2x-y)]-28[f(x+y)+f(x-y)]+3[f(2y)-2f(y)]-14[f(2x)-4f(x)],z???(?x,z?^p+?y,z?^q ). آن...
Let r, s, q,m, n ∈ N be such that s ≥ r ≤ q. Let Y be a fibered manifold with m-dimensional basis and n-dimensional fibers. All natural affinors on (J(Y,R)0) are classified. It is deduced that there is no natural generalized connection on (J(Y,R)0). Similar problems with (J(Y,R)0) instead of (J(Y,R)0) are solved.
The use of tissue-engineered human skin equivalents (HSE) for fundamental research and industrial application requires the expansion of keratinocytes from a limited number of skin biopsies donated by adult healthy volunteers or patients. A pharmacological inhibitor of Rho-associated protein kinases, Y-27632, was recently reported to immortalize neonatal human foreskin keratinocytes. Here, we in...
In a finite partially ordered set, Prob(x > y) denotes the proportion of linear extensions in which element x appears above element y. In 1969, S. S. Kislitsyn conjectured that in every finite poset which is not a chain, there exists a pair (x, y) for which 1/3 ≤ Prob(x > y) ≤ 2/3. In 1984, J. Kahn and M. Saks showed that there exists a pair (x, y) with 3/11 < Prob(x > y) < 8/11, but the full 1...
The effects of hydroethanolic extract of Yacon leaves (HEYL) on antioxidant, glycemic, and inflammatory biomarkers were tested in diabetic rats. Outcome parameters included glucose, insulin, interleukin-6 (IL-6), and hydrophilic antioxidant capacity (HAC) in serum and IL-6, HAC, malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) in soleus. The ra...
y(t0) = y0 Here f(t, y) is a given function, t0 is a given initial time and y0 is a given initial value for y. The unknown in the problem is the function y(t). Two obvious considerations in deciding whether or not a given algorithm is of any practical value are (a) the amount of computational effort required to execute the algorithm and (b) the accuracy that this computational effort yields. Fo...
An important contribution to the increased luminosity of the SLAC Linear Collider (SLC) in 1997/98 is due to improved performance of the linac. New tuning and stabilization strategies have reduced the emittance growth to nearly negligible values (<10% in x and <30% in y). A stronger lattice has less sensitivity to wakefields. A new orbit correction scheme and a different emittance tuning proced...
We consider the problem of nonparametric prediction for a multi-dimensional functional autore-gression y t = f(y t?1 ; :::; y t?d) + e t on the basis of N observations of y t. In the case when the unknown nonlinear function f belongs to the Barron class, we propose an estimation algorithm which provides approximations of f with expected L 2 accuracy O(N 1=4 ln 1=4 N). We also show that this app...
It has been shown (Kovacs and Bruckner, 1952; Bruckner et al., 1953a, 1953b, 1953c) that certain bacteria produce glutamyl polypeptides in which the y-glutamyl bond predominates; that produced by Bacillus anthracis (Ivainovics and Erd6s, 1937; Ivanovics and Bruckner, 1937; Hanby and Rydon, 1946) and by Bacillus mesentericus (Bruckner and Ivdnovics, 1937) contains the D-isomer alone, whereas tha...
Objective- Although the promotional effects on bone healing of pulsed electromagnetic fields (PEMF)have been well demonstrated, the effects of static magnetic fields (SMF) remained unclear. In this study,effects of SMFs on clinical and biomechanical aspects of bone healing using a canine unstable osteotomygap model were investigated .Design- Prospective descriptive trial.Animals- Fifteen mongre...
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