The MAGIC collaboration has been performing Target of Opportunity observations of blazars, when seen flaring in optical by Tuorla blazar monitoring program. In past three years, there has been 5 optical alerts during good weather conditions and reasonable declination of the source. Three alerts have resulted in discovery of VHE gamma-rays from previously undetected source. We will introduce the...

Abstract. A survey of the North Celestial Pole region using the RATAN-600 radio telescope at five frequencies in the range 2.3 to 21.7 GHz is described. Sources were chosen from the NVSS catalogue. The flux densities of 171 sources in the Declination range +75◦ to +88◦ are presented; typical flux density errors are 5-10 percent including calibration errors. About 20 percent of the sources have ...

Astrometric accuracy of complex modern VLBI arrays cannot be calculated analytically. We study the astrometric accuracy of phasereferenced VLBI observations for the VLBA, EVN and global VLBI array by simulating VLBI data for targets at declinations −25◦, 0◦, 25◦, 50◦, 75◦ and 85◦. The systematic error components considered in this study are calibrator position, station coordinate, Earth orienta...

Advanced spatial-learning adaptations have been shown for migratory songbirds, but it is not well known how the simple genetic program encoding migratory distance and direction in young birds translates to a navigation mechanism used by adults. A number of convenient cues are available to define latitude on the basis of geomagnetic and celestial information, but very few are useful to defining ...

The objectives of this study are (i) to identify the basic components of pitch that can be isolated from tone and attributed to intonation; (ii) to establish them as the elements that must be accounted for in the transcription of an oral corpus. These components are meant to be available for typological studies of the relationship between these elements as they are employed for marking of lexic...

Voice training exploits semiocclusives, which increase vocal tract interaction with the source. Modeling results suggest that vocal economy (maximum flow declination rate divided by maximum area declination rate, MADR) is improved by matching the glottal and vocal tract impedances. Changes in MADR may be correlated with thyroarytenoid (TA) muscle activity. Here the effects of impedance matching...

Seasonal asymmetry in the daily variation of the geomagnetic declination has been studied for the observatories of Honolulu, Hawaii, Tucson, Ariz., and San Juan, Puerto Rico, for an 11-yr. period. Behavior unsymmetrical with respect to the seasonal change of solar radiation is conspicuous and suggests the action of an atmospheric factor, probably the large-scale air circulation in the lower ion...

One important strand of research into the scaling of fundamental frequency has been concerned with the hypothesis that utterance length is a determining factor of initial pitch height, with longer utterances involving a higher initial F0 than that found in shorter utterances. Most work in this vein has been done on ‘intonation’ languages, with very little investigation having been carried out o...