Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Vladimir Stofanik"'
Autor:
Rupali Tiwari, Vlastimil Boháč, Roman Réh, Valentina Lo Giudice, Luigi Todaro, Viliam Vretenár, Vladimír Štofanik, Lubos Kristak
Publikováno v:
Developments in the Built Environment, Vol 16, Iss , Pp 100228- (2023)
The article investigates the thermophysical parameters of Turkey oak particleboard with different densities and their response to varying heat pulse power to cover possible thermally dependent disturbance effects during the measurement. Samples were
Externí odkaz:
https://doaj.org/article/2783c3e695de473dab9965451b83c3d9
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 10, Iss 5, Pp 345-349 (2012)
The radio-frequency (RF) electromagnetic field absorption in the human body model is investigated in this article. Absorption of prolate model of the biological body exhibits resonance properties in the case of so called E polarization. This occurs i
Externí odkaz:
https://doaj.org/article/fc4cc96cafc34224bbb93432c85e5425
Autor:
Peter Kubinec, Vladimir Stofanik, Oldrich Ondracek, Tomas Bagala, Miroslav Hagara, Radovan Stojanovic, Adam Fibich
Publikováno v:
MECO
Signal processing is frequently discussed topic nowadays. Digital Signal Processors (DSP) or Field Programmable Gate Array (FPGA) can process data at high rates. Arithmetic operations such as addition, subtraction, multiplication, division or square
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22158fad872f9d95cbde8be806d99301
https://doi.org/10.1109/meco.2018.8406022
https://doi.org/10.1109/meco.2018.8406022
Publikováno v:
2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFC).
In this paper, we describe low-noise clock system based on combination of the chip-scale atomic clock CSAC SA.45s and the low-noise OCXO. We introduce here a new approach of frequency comparison resolution enhancement, which is based on continuous dy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b4f87f52993bf2710b2803633511411
https://doi.org/10.1109/fcs.2017.8088962
https://doi.org/10.1109/fcs.2017.8088962
Publikováno v:
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA).
In this paper we introduce enhanced low power clock system that is able to achieve frequency stability ±0.01 ppm over a wide temperature range, which is approximately 100 times better than the stability achievable with typical Temperature Compensate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b17b4ddaa2d5cc80b232068812c1e23
https://doi.org/10.1109/radioelek.2016.7477391
https://doi.org/10.1109/radioelek.2016.7477391
Publikováno v:
2016 European Frequency and Time Forum (EFTF).
In this paper we introduce long-term frequency stability improvement of Oven Controlled Crystal Oscillator (OCXO) using Chip Scale Atomic Clock (CSAC). Compared to OCXO, the main disadvantage of the CSAC is their higher phase noise; however the CSAC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0df1328d618313db644172d436d59d01
https://doi.org/10.1109/eftf.2016.7477831
https://doi.org/10.1109/eftf.2016.7477831
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 10, Iss 5, Pp 345-349 (2012)
The radio-frequency (RF) electromagnetic field absorption in the human body model is investigated in this article. Absorption of prolate model of the biological body exhibits resonance properties in the case of so called E polarization. This occurs i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce8721ac9edc4b78616c95d60b0bbb93
http://advances.utc.sk/index.php/AEEE/article/view/642
http://advances.utc.sk/index.php/AEEE/article/view/642
Publikováno v:
2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA).
This paper examines modification of an oscillator with parallel LC resonant circuit, in order to confirm that the Barkhausen criterion is a necessary, but not sufficient condition for steady state oscillations existence in closed-loop feedback system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed29827f96a65f6131e9ca6b8179af89
https://doi.org/10.1109/radioelek.2015.7129062
https://doi.org/10.1109/radioelek.2015.7129062
Publikováno v:
2014 24th International Conference Radioelektronika.
The Barkhausen well known criterion for generation of steady state harmonic oscillations is, due to its simplicity, very often used in a design of oscillators. In literature, however, there are examples of oscillator circuits that, even when this con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7268f0f43dff84c1cafa6c4af9243ba
https://doi.org/10.1109/radioelek.2014.6828463
https://doi.org/10.1109/radioelek.2014.6828463
Publikováno v:
Proceedings of 21st International Conference Radioelektronika 2011.
In the paper we deal with design, modeling and verification of thermostat with particularly thermally insulated chamber, based on Peltier thermoelectric modules (elements). A prototype of the designed thermostat has been realized. Parameters of the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5d37b6d8c161240d0aede8852d2b22
https://doi.org/10.1109/radioelek.2011.5936457
https://doi.org/10.1109/radioelek.2011.5936457