Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs [PDF]
, 2002 Trigonometric parallax determinations are presented for 28 late-type dwarfs and brown dwarfs, including eight M dwarfs with spectral types between M7 and M9.5, 17 L dwarfs with spectral types between L0 and L8, and three T dwarfs. Broadband photometry at
C. Dahn +18 more
semanticscholar +1 more source
Top-down and bottom-up control of plankton structure and dynamics in hypertrophic fishponds
Hydrobiologia, 2023 We investigated the effects of strong top-down control by high fish stock on structure and seasonal dynamics of plankton in nine fishponds under conventional fishery management based on auxiliary feeding during two vegetation seasons. Mean concentrations
J. Vrba +12 more
semanticscholar +1 more source
On the Role of Training Data for SVM-Based Microwave Brain Stroke Detection and Classification. [PDF]
Sensors (Basel), 2023 The aim of this work was to test microwave brain stroke detection and classification using support vector machines (SVMs). We tested how the nature and variability of training data and system parameters impact the achieved classification accuracy.
Pokorny T +8 more
europepmc +2 more sources
Epicyclic Oscillations around Simpson–Visser Regular Black Holes and Wormholes [PDF]
Universe, 2021 We study epicyclic oscillatory motion along circular geodesics of the Simpson–Visser meta-geometry describing in a unique way regular black-bounce black holes and reflection-symmetric wormholes by using a length parameter l.
Z. Stuchl'ik, J. Vrba
semanticscholar +1 more source
Improving Microbial Quality of Ostrich Meat Using Mechanically Deboned Chicken Meat Protein Nanocomposite Coating Incorporated With <i>Ziziphora clinopodioides</i> Essential Oil and Eugenol During Cold Storage. [PDF]
Food Sci NutrNanocomposite coatings based on mechanically deboned chicken meat protein incorporated with nanoclay, Ziziphora clinopodioides essential oil, and eugenol effectively improved the microbial quality, safety, and sensory attributes of refrigerated ostrich meat.
Barkhordari H +6 more
europepmc +2 more sources
The European Physical Journal C, 2023 The present work is devoted to the study of the dynamics of charged particles around Simpson–Visser black holes (with the length parameter $$ l\le $$ l ≤ 2) and wormholes ( $$l>2$$ l > 2 ) immersed in an external asymptotically uniform magnetic field. To
Jaroslav Vrba +3 more
semanticscholar +1 more source
Preliminary Parallaxes of 40 L and T Dwarfs from the US Naval Observatory Infrared Astrometry Program [PDF]
, 2004 We present preliminary trigonometric parallaxes and proper motions for 22 L dwarfs and 18 T dwarfs measured using the ASTROCAM infrared imager on the US Naval Observatory (USNO) 1.55 m Strand Astrometric Reflector. The results presented here are based on
F. Vrba +14 more
semanticscholar +1 more source
Near-Infrared Photometry and Spectroscopy of L and T Dwarfs: The Effects of Temperature, Clouds, and Gravity [PDF]
, 2004 We present new JHK photometry on the MKO-NIR system and JHK spectroscopy for a large sample of L and T dwarfs. Photometry has been obtained for 71 dwarfs, and spectroscopy for 56.
G. Knapp +29 more
semanticscholar +1 more source
Discovering Vietnam: An Inside Look at Culture and Traditions
, 2023 Confucianism, Taoism, and Buddhism have had a significant impact on Vietnamese culture, influencing the nation's traditional values, practices, and manners.
Vrba, Jan
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Modern Small-sized Social Business
, 2023 The Modern Small-sized Social Business explores the strategies and approaches for thriving in the current social business landscape. This concise guide emphasizes leveraging social media, customer engagement, and agile methodologies to drive growth and ...
Huynh, Quynh Thi Ngoc, Vrba, Jan
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