Results 21 to 30 of about 1,340,059 (267)
The Slope of the Black Hole Mass versus Velocity Dispersion Correlation [PDF]
, 2002 Observations of nearby galaxies reveal a strong correlation between the mass of the central dark object MBH and the velocity dispersion σ of the host galaxy, of the form log(MBH/M☉) = α + β log(σ/σ0); however, published estimates of the slope β span a ...
S. Tremaine +14 more
semanticscholar +1 more source
Turbulent dispersion in cloud-topped boundary layers [PDF]
, 2009 Compared to dry boundary layers, dispersion in cloud-topped boundary layers has received less attention. In this LES based numerical study we investigate the dispersion of a passive tracer in the form of Lagrangian particles for four kinds of atmospheric
Vilà-Guerau de Arellano, J. (author) +11 more
core +3 more sources
Journal of Infection in Developing Countries, 2020 Introduction: Since the first reports of coronavirus disease 2019 (COVID-19) in December 2019, the disease has spread worldwide. Different social isolation strategies have been adopted to reduce community transmission, but few studies have evaluated the
Carlos Alexandre Antunes de Brito +5 more
doaj +1 more source
Persebaran Subjek Artikel-Artikel Jurnal Tik Ilmeu 2017-2022
Tik Ilmeu: Jurnal Ilmu Perpustakaan dan Informasi, 2023 This study aims to discover subject dispersion of Tik Ilmeu journal articles. Research data were generated from 86 articles of 2017-2022 publication. The subjects were assigned through analysis of the titles, abstracts and keywords. Subjects were grouped
Faisal Syarifudin
doaj +1 more source
SSRN Electronic Journal, 2017 Estimation error has plagued quantitative finance since Harry Markowitz launched modern portfolio theory in 1952. Using random matrix theory, we characterize a source of bias in the sample eigenvectors of financial covariance matrices. Unchecked, the bias distorts weights of minimum variance portfolios and leads to risk forecasts that are severely ...
Lisa R. Goldberg +2 more
openaire +4 more sources
Methodology to analyse three dimensional droplet dispersion applicable to Icing Wind Tunnels [PDF]
, 2009 This dissertation presents a methodology to simulate the dispersion of water droplets in the air flow typical of an Icing Tunnel. It is based on the understanding the physical parameters that influence the uniformity and the distribution of cloud of ...
Sorato, Sebastiano
core +7 more sources
Bluetongue Disease Control in Northern Ireland During 2017 and 2018
Frontiers in Veterinary Science, 2019 Since the emergence of bluetongue virus in central and northern Europe in 2006, Northern Ireland's (NI) surveillance programme has evolved to include the use of risk assessments and simulation models to monitor the risk of bluetongue incursion. Livestock
Anastasia Georgaki +9 more
doaj +1 more source
International Journal of Technology, 2023 Carbon nanotubes (CNTs) are very promising nanodevices due to their extraordinary electrical, thermal, and optical properties. However, as-grown single-walled CNTs (SWCNTs) contain a mixture of semiconducting and metallic species with great features ...
Sami S. Alabsi +4 more
doaj +1 more source
Application of optical dispersion techniques in phased array antenna beam steering
Journal of Telecommunications and Information Technology, 2005 The paper presents an opto-electronic system for antenna beam control and results of model system measurements.
Marcin Muszkowski, Edward Sędek
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Justification of mixer parameters for flour components
Технічна інженерія, 2022 The need to provide the bakery and confectionery industries with new high-tech equipment that would ensure high-quality preparation of mixtures for the main processes in the production of flour semi-finished products with high-quality mixing of dosing ...
V.A. , I.Ya. , A.O. , Ye.A.
doaj +1 more source