The vibrational redistribution of energy following internal conversion in glyoxal has been studied in a molecular beam using the "pump-and-probe" technique. A beam of glyoxal is initially pumped from So to a selected vibronic level of Sl. After internal conversion occurs, a tunable dye laser is used to probe the hot band absorption of the molecules by re-excitation into Sl. The total fluorescen...

We introduce an audio retrieval-by-example system for orchestral music. Unlike many other approaches, this system is based on analysis of the audio waveform and does not rely on symbolic or MIDI representations. ARTHUR retrieves audio on the basis of long-term structure, specifically the variation of soft and louder passages. The longterm structure is determined from envelope of audio energy ve...

Study of band structures of nuclei from symmetry consideration plays an important role in understanding different phenomena in nuclear structure. In selected regions of nuclear landscape, axial symmetry is broken and these nuclei, referred to as transitional nuclei, are described using the triaxial deformed mean-field. There are several empirical observations indicating that axial symmetry is b...

In the crystal, d(GGGATCCC)2 forms an A-DNA double helix as known from a single crystal X-ray diffraction study. Accordingly, in the Raman spectra of crystals the A-family marker bands at 664, 705, 807 and 1101 cm-1 and the spectral characteristics in the region 1200 to 1500 cm-1 clearly demonstrate the A-form as the dominant conformation. Bands at 691, 850, and 1080 cm-1, however, indicate tha...

The GaO and GaO2 molecules were investigated using negative ion photoelectron spectroscopy. All the photoelectron spectra showed vibrationally resolved progressions. With the aid of electronic structure calculations and Franck-Condon spectral simulations, different molecular parameters and energetics of GaO-/GaO and GaO2-/GaO2 were determined, including the electron affinity of GaO, the vibrati...

about the zenith with intensity prominences in the zenith-angle range from 5' to 10', near 20', and in the range from 35' to 40'. These. results tend to confirm the predictions of Schremp relative to the existence of a fine structure due to a line or banded nature of the energy spectrum forcosmic rays at infinity. That the finestructure may not arise partly from magnetic effects is not entirely...

STACEE is a ground based γ-ray observatory that uses a heliostat array, built for solar energy research, to detect atmospheric Cherenkov radiation from γ-ray initiated extensive air showers. During the first half of 2001, a prototype detector, STACEE-48, was used to detect the blazar Markarian 421, which was in an extremely active state. Observations from March to May of 2001 yielded an integra...

The temperature dependence of the electron-spin relaxation time in MgB2 is anomalous as it does not follow the resistivity above 150 K; it has a maximum around 400 K and decreases for higher temperatures. This violates the well established Elliot-Yafet theory of spin relaxation in metals. The anomaly occurs when the quasiparticle scattering rate (in energy units) is comparable to the energy dif...

Recently, it has been shown that the ground-state energy of a quantum many-body system can be written in terms of cumulants. In this paper we show that the energies of excited states can be expressed similarly. These representations are suitable for various approximation schemes, e.g., projection techniques. The explicit use of cumulants ensures size consistency in all approximations. The theor...