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61.
Francisco P.J. Valero Carlos B. Suarez Robert W. Boese 《Journal of Quantitative Spectroscopy & Radiative Transfer》1980,23(3):337-341
Absolute line intensities and self-broadening coefficients have been measured at 197° and 294°K for the 201II ← 000 band of 12C16O2 at about 4978cm-1. The vibration-rotation factor (FVR), the purely vibrational transition moment (∣R(O)∣), and the integrated band intensity (Sband) are deduced from the measurements. The results are: FVR(m)=1+(0.24±0.08)x10-4m+(0.55+0.21)x10-4m2, ∣R(O)∣= (4.340±0.008x10-3 debye, Sband=96372±190cm-1km-1atm-1STP. The results for self-broadening coefficients, as well as for individual vibration-rotation lines, are presented in the text. 相似文献
62.
63.
Some Morera and mean-value type theorems are proved in the hyperbolic disk.
Partially supported by NSF grants DMS-9000619 and CDR-8803012.
Partially supported by NSF grants DMS-8703072 and DMS-9000619, and DGI-CYT grant PB 89-0311. 相似文献
64.
It is known that under resonance conditions, a group of strongly interacting bosonic atoms, trapped in a double-well potential, mimics a single particle, performing Rabi oscillations between the wells. By implication, all atoms need to tunnel at roughly the same time, even though the Bose–Hubbard Hamiltonian accounts only for one-atom-at-a-time transfers. The mechanism of this collective behavior is analyzed, the Rabi frequencies in the process are evaluated, and the limitation of this simple picture is discussed. In particular, it is shown that the small rapid oscillations superimposed on the slow Rabi cycle result from splitting the transferred cluster at the sudden onset of tunnelling, and disappear if tunnelling is turned on gradually. 相似文献
65.
Diogo de Andrade Nuno Fachada Carlos M. Fernandes Agostinho C. Rosa 《Entropy (Basel, Switzerland)》2020,22(11)
We present a generative swarm art project that creates 3D animations by running a Particle Swarm Optimization algorithm over synthetic landscapes produced by an objective function. Different kinds of functions are explored, including mathematical expressions, Perlin noise-based terrain, and several image-based procedures. A method for displaying the particle swarm exploring the search space in aesthetically pleasing ways is described. Several experiments are detailed and analyzed and a number of interesting visual artifacts are highlighted. 相似文献
66.
67.
Locally periodic Timoshenko rod: experiment and theory 总被引:2,自引:0,他引:2
Díaz-de-Anda A Pimentel A Flores J Morales A Gutiérrez L Méndez-Sánchez RA 《The Journal of the Acoustical Society of America》2005,117(5):2814-2819
The flexural vibrations of a locally periodic rod, which consists of N unit cells, are discussed both from the experimental and theoretical points of view. Timoshenko's beam theory and the transfer matrix method are used to calculate the normal-mode frequencies and amplitudes. The theoretical values are then compared with the experimental ones, which are obtained using an electromagnetic acoustic transducer (EMAT). Good agreement between the numerical results and the experimental measurements is obtained. It is shown that as N grows, a band spectrum emerges. 相似文献
68.
FRANCK-CONDON FACTORS AND R-CENTROIDS FOR THE GREEN-YELLOW SYSTEM OF LA16O AND LA18O ARE REPORTED. CALCULATION INCLUDES ROTATION-VIBRATION INTERACTION, AND A SIGNIFICANT VARIATION WHEN THE ROTATIONAL QUANTUM NUMBER CHANGES HAS BEEN FOUND. 相似文献
69.
Gouy wave modes are linear waves with finite energy that propagate without distortion at any phase and group velocity through a focal region in a dispersive medium. These features make them potentially useful for the onset and control of nonlinear interactions. 相似文献
70.
Carlos Guerrero-Sanchez 《Applied Surface Science》2006,252(7):2555-2561
The application of combinatorial and high-throughput approaches in polymer research is described. An overview of the utilized synthesis robots is given, including different parallel synthesizers and a process development robot. In addition, the application of the parallel synthesis robots to reversible addition fragmentation termination (RAFT) radical polymerizations and ionic copolymerizations is overviewed. Moreover, first results concerning the process development of semi-batch free radical polymerizations are described. 相似文献