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961.
This paper considers the expected residual minimization (ERM) method proposed by Luo and Lin (J. Optim. Theory Appl. 140:103–116,
2009) for a class of stochastic variational inequality problems. Different from the work mentioned above, the function involved
is assumed to be nonlinear in this paper. We first consider a quasi-Monte Carlo method for the case where the underlying sample
space is compact and show that the ERM method is convergent under very mild conditions. Then, we suggest a compact approximation
approach for the case where the sample space is noncompact.
This work was supported in part by Project 10771025 supported by NSFC and SRFDP 20070141063 of China. 相似文献
962.
963.
H. Luo D.Y. Tang G.Q. Xie H.J. Zhang L.J. Qin H.H. Yu L.Y. Ng L.J. Qian 《Optics Communications》2008,281(21):5382-5384
Passive mode-locking of a diode pumped Yb-doped GdVO4 crystal laser was demonstrated for the first time to our knowledge. The laser was mode-locked at the wavelength of 1019.1 nm and had an average output power of 1.01 W. The mode-locked pulse duration was 3.1 ps. The laser was end-pumped by a high-power fiber pigtailed laser diode bar and the mode-locking was enabled by a semiconductor saturable absorber mirror (SESAM). 相似文献
964.
965.
Optimal control for a population dynamics with age-dependent and diffusion in a periodic environment
Zhixue Luo 《Journal of Applied Mathematics and Computing》2008,27(1-2):77-84
Here we consider the optimal harvesting problem for a periodic age-dependent population dynamics with diffusion. Namely, we investigate the model with periodic vital rates and a periodic forcing term that sustains oscillations. By using Mazur’s theorem, we demonstrate existence of solutions of the optimal control problem and by the conception of normal cone, we also obtain the first order necessary conditions of optimality for the problem. Our results extend some known criteria. 相似文献
966.
967.
The silver chromate self-assembly necklace structures were synthesized using high-active acrylicamide template. The whole
length of the necklace structure was between 1.2 and 1.5 μm. The product was composed of single crystalline nanorods with
diameters of about 40 nm and lengths of 300 nm. The synthetic mechanism and product’s optical properties were also studied. 相似文献
968.
Determination of the limit of photon mass and cosmic magnetic vector with rotating torsion balance 总被引:1,自引:0,他引:1
A rotating torsion balance method to detect the product of the photon mass squared and the ambient cosmic vector potential is proposed. This modulation method is efficacious whether the vector potential is fortuitously aligned with Earth's rotation axis or not, and the experimental precision of the modulation method can be improved by at least an order of magnitude compared to the statistical method. 相似文献
969.
John P. Shockcor Ronald C. Crouch Gary E. Martin Abdallah Cherif Jiann-Kuan Luo Raymond N. Castle 《Journal of heterocyclic chemistry》1990,27(2):455-458
One-dimensional ( 1D ) variants of two-dimensional ( 2D ) nmr techniques can frequently provide the required information in a much shorter period of time than the 2D experiment from which they were derived. Application of the 1D homonuclear Hartmann-Hahn (1D-HOHAHA) experiment to establish proton-proton connectivity networks in highly overlapped four-spin systems in the proton nmr spectra of polynuclear aromatics is described. Selective subspectra are contrasted to the data obtained in a COSY experiment on the same molecule, benzo[f][l]benzothieno [2,3 -c]quinoline. Results from the 1D-HOHAHA technique are especially useful when component resonances from several spin systems are heavily overlapped. Relayed 1D-HOHAHA provides the means of exploiting small, long range coupling pathways of polynuclear aromatics. 相似文献
970.
Summary In the present paper, a diffraction integral formula for a misaligned optical system is derived. The interference effects
of opticalelement arrays are studied by means of such a formula. The possibility of eliminating interference fringes is discussed.
The conclusion is that the interference fringes could be eliminated when the αβγδ condition for arrays is satisfied. The synthetical
aberration is simultaneously eliminated. However, in this case, the synthetical image coincides with the individual images.
For some special application, the synthetical image does not coincide with the individual images and the αβγδ condition is
not fulfilled. But the interference fringes may disappear in some special cases.
Riassunto La formula di Collins, che esprime il cammino ottico fra un punto del piano oggetto e un punto del piano immagine nel caso di un sistema ottico centrato, è generalizzata al caso di un sistema ottico disallineato. La formula cosí ottenuta è applicata allo studio del fenomeno d’interferenza che ha luogo nel piano della cosiddetta ?immagine sintetica? fra i vari fasci emergenti da una cortina di elementi ottici. Si discutono infine le condizioni in cui non si hanno frange d’interferenza sull’immagine sintetica.相似文献