báo cáo hóa học:" Research Article Infinitely Many Solutions of Strongly Indefinite Semilinear Elliptic Systems" potx

... Problems Volume 2009, Article ID 865408, 11 pages doi:10.1155/2009/865408 Research Article Infinitely Many Solutions of Strongly Indefinite Semilinear Elliptic Systems Kuan-Ju Chen Department of Applied Science, ... Yang shows that under some assumptions on the functions f and g there exist infinitely many solutions of the semilinear elliptic systems −Δu  u ...

Ngày tải lên: 21/06/2014, 20:20

... 2009, Article ID 532546, 7 pages doi:10.1155/2009/532546 Research Article Infinitely Many Solutions for a Semilinear Elliptic Equation with Sign-Changing Potential Chen Yu and Li Yongqing School of ... indefinite- weight elliptic problems in R N ,” Proceedings of the American Mathematical Society, vol. 116, no. 3, pp. 701–706, 1992. 9 S. Maad, Infinitely many solutio...

Ngày tải lên: 21/06/2014, 20:20

... method of constructing sub-supersolution, this paper gives the existence of infinitely many periodic solutions for problem P. 2. Main Results and Proofs At first, we give an existence of positive solutions ... subsolution of px-Laplacian problems. There are many papers on the existence of periodic solutions for p-Laplacian elliptic systems, for example 21–24. The r...

Ngày tải lên: 21/06/2014, 20:20

... single set of beamforming weights for the users). For the indoor channel of interest to us, a reasonable choice of the tile size is 18 contiguous subcarriers (i.e., 1 frequency “bin”) by 24 OFDM symbols ... our purposes, we assume that 3 OFDM symbols (1st, 14th, and 24th) in each uplink subframe are reserved for the transmission of sounding pilots. In each of these OFDM symbols, pil...

Ngày tải lên: 21/06/2014, 19:20

... semicontinuous, and classical solutions twice continuously differentiable solutions in the pointwise sense of G  ≤ 0 on relatively open subset of O are solutions of G − ≤ 0. Suppose, moreover, ... Problems Volume 2009, Article ID 873526, 15 pages doi:10.1155/2009/873526 Research Article Almost Periodic Viscosity Solutions of Nonlinear Parabolic Equations Shilin Zhang a...

Ngày tải lên: 21/06/2014, 20:20

... Corporation Fixed Point Theory and Applications Volume 2008, Article ID 401947, 15 pages doi:10.1155/2008/401947 Research Article Bounded and Periodic Solutions of Semilinear Impulsive Periodic System on Banach ... with impulse, the estimate of PC-mild solutions is given. Therefore, the existence of T 0 -periodic PC-mild solutions for semilinear impulsive periodic system...

Ngày tải lên: 21/06/2014, 23:20

... impact on the expressiveness of the computed measures. Out of the results of the analysis of the measures and the presentation of desirable modifications, a subset of expedient measures is proposed ... deterioration of this metric in merge situations. Thus, it can be used to test the capabilities of the system to separately detect single objects, which is of major importance...

Ngày tải lên: 22/06/2014, 00:20

... example, we see that the worst case PAPR behavior of an OFDM signal is just an instance of the √ N behavior of any N orthonormal signals [16]. A theorem of Kashin and Tzafriri [21]statesthat under ... size of a subset of transmission signals and several signal processing properties of the subset. In Section 2, we prove our main result on tone reservation for OFDM systems with a...

Ngày tải lên: 21/06/2014, 05:20

... noisy environments. We focus on tonal bird sounds as many of the bird sounds are of a tonal character. The detection of spectro-temporal regions of tonal bird sounds is performed by a method exploiting ... result of short-time processing, the short-time Fourier spec trum of a sinusoidal signal is the Fourier transform of the frame-window function. Thus, the detection of bird...

Ngày tải lên: 21/06/2014, 05:20

... is, the study of derivatives of the perturbation function. On the other hand, by stability we mean the qualitative analysis, that is, the study of various continuity properties of the perturbation ... and closeness of the contingent derivative of the marginal map. By virtue of lower Studniarski derivatives, Sun and Li 14 obtained some quantitative results concerning the behavi...

Ngày tải lên: 21/06/2014, 05:20