Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Otto Zeman"'
Autor:
Martin Stusek, Dmitri Moltchanov, Pavel Masek, Konstantin Mikhaylov, Otto Zeman, Martin Roubicek, Yevgeni Koucheryavy, Jiri Hosek
Publikováno v:
IEEE Access, Vol 8, Pp 154625-154636 (2020)
With the proliferation of machine-to-machine (M2M) communication in the course of the last decade, the importance of low-power wide-area network (LPWAN) technologies intensifies. However, the abundance of accurate propagation models proposed for thes
Externí odkaz:
https://doaj.org/article/a301fcd73dd74ce9b0582e571b227061
Autor:
Sergey Andreev, Martin Stusek, Dmitri Moltchanov, Pavel Kustarev, Pavel Masek, Jiri Hosek, Konstantin Mikhaylov, Otto Zeman, Martin Roubicek, Yevgeni Koucheryavy
Publikováno v:
IEEE Internet of Things Journal. 9:4031-4050
An assessment of radio network coverage, usually in the form of a measurement campaign, is essential for multi-base-station (multi-BS) network deployment and maintenance. It can be conducted by a network operator or its served consumers. However, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cf64490268c100c9981d209db32933b
https://doi.org/10.1109/jiot.2021.3102694
https://doi.org/10.1109/jiot.2021.3102694
Autor:
Otto Zeman, Martin Stusek, Jiri Hosek, Dmitri Moltchanov, Pavel Masek, Konstantin Mikhaylov, Yevgeni Koucheryavy, Martin Roubicek
Publikováno v:
IEEE Access. 2020, vol. 8, issue 1, p. 154625-154636.
IEEE Access, Vol 8, Pp 154625-154636 (2020)
IEEE Access, Vol 8, Pp 154625-154636 (2020)
With the proliferation of machine-to-machine (M2M) communication in the course of the last decade, the importance of low-power wide-area network (LPWAN) technologies intensifies. However, the abundance of accurate propagation models proposed for thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9e0994bc11015261b64a034577ae49e
https://hdl.handle.net/11012/195581
https://hdl.handle.net/11012/195581
Autor:
Martin Roubicek, Pavel Masek, Jiri Hosek, Otto Zeman, Yevgeni Koucheryavy, Sergey Andreev, Konstantin Mikhaylov, Martin Stusek, Krystof Zeman, Jakub Votapek
Publikováno v:
GLOBECOM Workshops
Today, about 6.5 billion “things” are connected to the public space. While this sounds like a lot, still less than 1% of all the things that are surrounding us and could be connected are actually utilizing this opportunity. Hence, the question is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b560997d42229ca1e89f103ce15256f3
https://doi.org/10.1109/glocomw.2018.8644487
https://doi.org/10.1109/glocomw.2018.8644487
Autor:
Niels Otto Jensen, Otto Zeman
Publikováno v:
Quarterly Journal of the Royal Meteorological Society. 113:55-80
A new model has been developed to investigate turbulence in flows over two-dimensional hills: the von Mises transformation was applied in mean momentum equations, and turbulence equations (second-order-closure type) were solved in a coordinate system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9455c505cfce61e9188f088ea68ef83c
https://doi.org/10.1002/qj.49711347505
https://doi.org/10.1002/qj.49711347505
Autor:
Otto Zeman
Publikováno v:
AIAA Journal. 30:1277-1283
This paper deals with similarity and parameterization in supersonic shear layers with isothermal freestreams, when the Mach number M (based on the velocity difference Al/ across the layer) is M > 3. With the support of modeling results and experiment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b3472bb02f9e3817142efe956f1e66e
https://doi.org/10.2514/3.11061
https://doi.org/10.2514/3.11061
Autor:
Otto Zeman
Publikováno v:
Physics of Fluids A: Fluid Dynamics. 3:951-955
This paper reports on the extension of second‐order models for unforced isotropic turbulence to the compressible regime. The equations contain two principal compressibility terms: the dilatation dissipation and the pressure–dilatation correlation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e85e2d402eef2005959b486f77b051ea
https://doi.org/10.1063/1.857971
https://doi.org/10.1063/1.857971
Autor:
Otto Zeman
Publikováno v:
Physics of Fluids A: Fluid Dynamics. 2:178-188
In this paper a concept of dilatation dissipation ed for high Reynolds number compressible turbulence is introduced. The concept is predicated on the existence of shocklike structures embedded within energetic turbulent eddies. A parametric expressio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c48ab698b592e394d362c49e4ce476d1
https://doi.org/10.1063/1.857767
https://doi.org/10.1063/1.857767
Autor:
Otto Zeman
Publikováno v:
Studies in Turbulence ISBN: 9781461276722
In high-speed turbulent flows questions arise as to what extent compressibility affects turbulence structures, the Reynolds stress- mean velocity (constitutive) relation, and the accompanying processes of heat transfer and mixing. This paper addresse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98f618654c497d469d9e520ccd99cce3
https://doi.org/10.1007/978-1-4612-2792-2_21
https://doi.org/10.1007/978-1-4612-2792-2_21
Autor:
Otto Zeman, Gregory A. Blaisdell
Publikováno v:
Advances in Turbulence 3 ISBN: 9783642844010
This paper reports on recent advances in modeling and direct numerical simulations (DNS) of compressible turbulent flows. In the second-order equations, two principal compressibility terms have been identified: the dilatation dissipation (∈ d ) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63b195edf02034543872455ec00826e3
https://doi.org/10.1007/978-3-642-84399-0_48
https://doi.org/10.1007/978-3-642-84399-0_48