National Repository of Grey Literature 45 records found  beginprevious36 - 45  jump to record: Search took 0.00 seconds. 
Sondy pro analýzu integrity signálu
Žilka, Zdeněk ; Berka, Zbyněk ; Braun, Jaromír
Models of probes and their physical and electrical connections to the point of measurements in testing of ultra-high-speed boards fror compliance with signal integrity are provided. The aim is, to minimize the loading effect of the probe and to see the most exact replica of the signal.
Souhrn měření dceřinných produktů rozpadu radonu a aerosolových částic v Bozkovských dolomitových jeskyních
Thinová, L. ; Berka, Z. ; Brandejsová, E. ; Ždímal, Vladimír ; Milka, D.
To define the calculation of the effective dose in caves, the following measurements were carried out: continual radon measurement, regular radon and daughter measurement through the sampling procedure to specify propoprtion of radon daughters, regular indoor air flow measurement to study the location of radon supply and its transfer among individual parts of the cave.
Behaviorální modely spojů ve smíšených elektronických soustavách
Žilka, Zdeněk ; Berka, Zbyněk ; Braun, Jaromír
In this paper the possibilities and limitations of interconnection models in the ICM /Interconnected Modeling Specification/ IBIS /Input/Output Buffer Information Specification/ format will be investigated with respect to isolation of signal integrity faults.
Některé otázky spojené s modelováním konektorů vysokorychlostních smíšených analogově číslicových systémů
Žilka, Zdeněk ; Berka, Zbyněk ; Braun, Jaromír
Connectors may be modeled as short multiwire transmission lines. The model of a connector contains only some partial inductances and the missing partial inductances of return paths must be added in order to obtain loop inductances required for the simulation of the system.
Rozdělení velikostí aerosolových částic v budovách a jeskyních a jeho vliv na určení dávky spojené s radonem
Berka, Z. ; Thinová, L. ; Brandejsová, E. ; Ždímal, Vladimír ; Froňka, A. ; Milka, D.
This paper summarized results of aerosol particles sizes spectra evaluation which has been measured directly in the Bozkov cave. These spectra are compared with the ones for residental areas and the radon-to-dose convertion factor is disscused. The correction factor (so called "caves factor") value is discussed too.
První výpočty efektivní dávky z měření dceřinných produktů rozpadu radonu a aerosolových částic v jeskyních
Thinová, L. ; Berka, Z. ; Brandejsová, E. ; Ždímal, Vladimír
The result from continual radon activity measurement, immediate radon daughter and radon activity sampling (one per month), air flow measurement, and aerosol particle size distribution determination have been taken into account of the effective dose of the permanent guides in caves. All data obtained by the carried out measurements and calculations published by J. Porstendörfer were used for more exact determination of an effective doses from radon and daughters inhalation for guides in the Bozkov cave.

National Repository of Grey Literature : 45 records found   beginprevious36 - 45  jump to record:
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5 Berka, Zbyněk
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