Albena Antonova

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In the last decades, Knowledge Management has gained momentum as an important tool for competitiveness of organizations. A number of Knowledge Management approaches are described in the literature. Some authors focus in particular on the importance of Knowledge Audit, first, as a start point for any Knowledge Management initiative, and second, as a regular(More)
We report the detection of periodic (p = 1.96 hours) bursts of extremely bright, 100% circularly polarized, coherent radio emission from the M9 dwarf TVLM 513-46546. Simultaneous photometric monitoring observations have established this periodicity to be the rotation period of the dwarf. These bursts, which were not present in previous observations of this(More)
INTRODUCTION Sustainable development is a four-decade long debate. The consequences of human activity influenced irreversibly the global ecosystem balance , leading to resource scarcity, climate changes and social inequity. Globalization and the fast emergence of new technologies has resulted in accelerated production and consumption models that provoked(More)
We find periodic I-band variability in two ultracool dwarfs, TVLM 513-46546 and 2MASS J00361617+1821104, on either side of the M/L dwarf boundary. Both of these targets are short-period radio transients, with the detected I-band periods matching those found at radio wavelengths (P=1.96 hr for TVLM 513-46546, and P=3 hr for 2MASS J00361617+1821104). We(More)
Radio activity has been observed in a large variety of stellar objects, including in the last few years, ultra-cool dwarfs. To explore the extent of long-term radio activity in ultra-cool dwarfs, we use data taken over an extended period of 9 hr from the Very Large Array of the source 2MASS J05233822-1403022 in September 2006, plus data taken in 2004. The(More)
  • R Kurtev, M Gromadzki, J C Beamín, S L Folkes, K Pena Ramirez, V D Ivanov +11 others
  • 2016
Knowledge of the stellar content near the Sun is important for a broad range of topics ranging from the search for planets to the study of Milky Way (MW) structure. The most powerful method for identifying potentially nearby stars is proper motion (PM) surveys. All old optical surveys avoid, or are at least substantially incomplete, near the Galactic plane.(More)
Production of drawing movements was studied in 29 right-handed children aged 9 to 11 years. The movements were sequences of horizontal and vertical linear strokes conjoined at a right angle (open polygonal chains) referred to below as trajectories. Trajectories comprising four to six segments were presented to a subject visually in a static or dynamic mode(More)
The production of drawing movements was studied in 29 right-handed children of 9-to-11 years old. The movements were the sequences of horizontal and vertical linear stokes conjoined at right angle (open polygonal chains) referred to throughout the paper as trajectories. The length of a trajectory varied from 4 to 6. The trajectories were presented visually(More)
Aurorae are detected from all the magnetized planets in our Solar System, including Earth. They are powered by magnetospheric current systems that lead to the precipitation of energetic electrons into the high-latitude regions of the upper atmosphere. In the case of the gas-giant planets, these aurorae include highly polarized radio emission at kilohertz(More)