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61.
Convergence Rate of Solutions to a Hyperbolic Equation with $p(x)$-Laplacian Operator and Non-Autonomous Damping 下载免费PDF全文
This paper concerns the convergence rate of solutions to a hyperbolic
equation with $p(x)$-Laplacian operator and non-autonomous damping. We apply the Faedo-Galerkin method to establish the existence of global solutions,
and then use some ideas from the study of second order dynamical system to
get the strong convergence relationship between the global solutions and the
steady solution. Some differential inequality arguments and a new Lyapunov
functional are proved to show the explicit convergence rate of the trajectories. 相似文献
62.
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64.
P. Baiocchi S. Cecchini H. Dekhissi V. Garutti G. Giacomelli G. G. Giani E. Katsavounidis G. Iori L. Patrizii V. Popa P. Serra V. Togo U. Valdre' E. Vilela 《Radiation measurements》1995,25(1-4):145-150
We present experimental results on the calibration of the CR9 nuclear track detector, manufactured by the Intercast Europe Co., of Parma (Italy). The calibration was performed with several ions of different kinetic energies: from 50 keV protons to 11.3 A GeV gold ions; β=v/c ranges from about 4·10−3 to about 1. We find that a single curve of the reduced etch rate p versus Restricted Energy Loss is able to describe all data. Furthermore the data are consistent with about 100% contribution of the nuclear energy loss to the CR39 response. This type of CR39 is used in the MACRO experiment at the Gran Sasso Laboratory. 相似文献
65.
We evaluate the emissivity rates for d-decay and s-decay by exactly solving the angular integrals involved and without assuming
the degeneracy of electrons. We have also studied the effects of QCD coupling constant as well as the s-quark mass on the
emissivity rates. We find that these parameters are important in determining the threshold and extinction densities for d-
and s-decays. 相似文献
66.
Intraoral pressure and subglottal pressure, derived from tracheal puncture, were recorded with the electroglottographic signal for one normal speaking male during phonation. The mean subglottal pressure for vowels was also estimated by interpolating the intraoral pressure from surrounding /p/ occlusions. The pressure measurements were highly correlated (r = 0.98) and there were small pressure value differences (on average <2%). The effects of varying speech rate and mode of phonation on the pressure measurements are discussed. A decrease in pressure from the mean subglottal pressure for the open phase and an increase for the closed phase was found during the glottal vibratory cycles. 相似文献
67.
高重复率XeCl准分子激光器的放电特性 总被引:1,自引:0,他引:1
本文报道紫外预电离放电泵浦的高重复率XeCl准分子激光器的放电特性,分析了放电参数的改变对放电过程的影响.最佳转换效率达2.2%. 相似文献
68.
In this paper, we propose a novel classification framework using single feature kernel matrix. Different from the traditional kernel matrices which make use of the whole features of samples to build the kernel matrix, this research uses features of the same dimension of any two samples to build a sub-kernel matrix and sums up all the sub-kernel matrices to get the single feature kernel matrix. We also use single feature kernel matrix to build a new SVM classifier, and adapt SMO (Sequential Minimal Optimization) algorithm to solve the problem of SVM classifier. The results of the experiments on several artificial datasets and some challenging public cancer datasets display the classification performance of the algorithm. The comparisons between our algorithm and L2-norm SVM on the cancer datasets demonstrate that the accuracy of our algorithm is higher, and the number of support vectors selected is fewer, indicating that our proposed framework is a more practical approach. 相似文献
69.
A simple genetic algorithm is implemented to perform multi parameter optimization of Raman Fiber Amplifier for 100 channel S band dense wavelength division multiplexed system at 25 GHz interval. A cost effective system using single Raman pump is investigated aiming at maximum average gain. The single counter propagating pump is optimized to frequency of 211.528 THz and 652.93 mW power level with optimum Raman fiber length of 44.064 Km. There is evidence to show that the optimum solution presents a small gain variation (less than 3 dB) over an effective bandwidth covering 197–199.475 THz. The optimized configuration enabled an adequate system performance in terms of acceptable Q-factor (19.52 dB) and BER (1.46 × 10−21). 相似文献
70.