National Repository of Grey Literature 35 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Secure network based on CISCO systems
Wagner, Zdeněk ; Beran, Jan (referee) ; Macho, Tomáš (advisor)
This work deals with the matter of Virtual Private Network (VPN) utilizing both contemporary and older protocols and the possibilities of their use. Among the most interesting parts there are those presenting various ways of use of the VPN technology, IPSec protocol, IOS SSLVPN and RSA server with HW token ensuring the two-factor user authentication.
PROCESSING OF THE DATA MEASURED WITH CLOUD CONDENSATION NUCLEI COUNTER IN YEAR 2020 FOR SUBMISSION TO EBAS DATABASE
Moravec, Pavel ; Jindra, Tomáš ; Wagner, Zdeněk ; Ždímal, Vladimír
Aerosol particles in the atmosphere that allow water vapor to condense and form cloud droplets are called Cloud Condensation Nuclei (CCN). Elevated concentrations of CCN tend to increase the concentration and decrease the size of cloud droplets. This can lead to suppression of precipitation in shallow and short-lived clouds and to greater convective overturning and more precipitation in deep convective clouds, Rose et al.(2010). The response of cloud properties and precipitation processes to increasing anthropogenic aerosol concentrations represents one of the largest uncertainties in the current understanding of climate change. One of the fundamental challenges is to determine the ability of aerosol particles to act as CCN under relevant atmospheric conditions. Knowledge of the spatial and temporal distribution in the atmosphere is essential to incorporate the effects of CCN into meteorological models of all scales, Huang et al. (2007). Long-term CCN measurements are performed at aerosol monitoring sites such as those forming ACTRIS (Aerosols, Clouds, and Trace Gases Research Infrastructure) network. Measured data are then submitted to the EBAS database, where they are available for the other ACTRIS researchers. In this paper, we present our experience with the processing of the data measured with CCNC for submission to the EBAS database. The data prepared for submission to EBAS from year 2020 are also presented.
Plný tet: Download fulltextPDF
An Improved Method for Calculation of the Wet Particle Diameter and tha Kappa Parameters from the CCN Data
Wagner, Zdeněk ; Mishra, Gaurav ; Moravec, Pavel ; Zíková, Naděžda
The study of particle size distribution and hygroscopic growth is important for several reasons. Particle diameter is available experimentally, but the relationship of \nhygroscopic growth to cloud condensation nuclei (CCN) and AMS data can be modeled mathematically. In this paper, we present an improved algorithm for calculating the wet \nparticle diameter and the κ parameter that is faster, more accurate, and more reliable than the algorithm used by other authors.\n
Plný tet: Download fulltextPDF
Application of Cross-Section Filtration to Detect and Correct Errors Caused by Technical Problems in SMPS.
Wagner, Zdeněk ; Kovanic, P. ; Zíková, Naděžda ; Ondráček, Jakub ; Schwarz, Jaroslav ; Ždímal, Vladimír
The aim of the work is thus development of a robust algorithm for detection of such errors and their fully automatic correction. The algorithm should be fast so that it could be applied in real time.
Fulltext: content.csg - Download fulltextPDF
Plný tet: SKMBT_C22019110512081 - Download fulltextPDF
Physicochemical Characterization of Chiral Ionic Liquids for Their Applications.
Andresová, Adéla ; Bendová, Magdalena ; Wagner, Zdeněk ; Husson, P. ; Feder-Kubis, J. ; Traïkia, M.
In this work, we address a thermodynamic characterization of a homologous series of 1–[(1R, 2S, 5R)-(–)-menthoxymethyl]-3-alkylimidazolium bis{(trifluoromethyl)sulfonyl} imide ionic liquids. The alkyl chain length ranges from methyl to dodecyl. In this study, our attention is focused on the thermodynamic properties of the pure CILs, i.e. on their heat capacities, densities, viscosities, and self-diffusion coefficients of the cations. The second level is to gain a deeper understanding of the structure-property relationships. Data analysis was carried out by means of mathematical gnostics.
Changes in Sub-micron Number Size Distributions at Czech Rural and Urban Background Stations in the Last Ten Years.
Zíková, Naděžda ; Ondráček, Jakub ; Wagner, Zdeněk ; Ždímal, Vladimír
In this work, not only total concentrations are evaluated, but also particle number size distributions (PNSD) are compared in the last decade at the two stations, and possible explanations for the change in concentrations and PNSD changes are looked for. Additionally, also the change in the frequency and strength of the NPF events is evaluated.\n
Fulltext: Download fulltextPDF
Advanced Data Analysis of Thermophysical Properties of Chiral Ionic Liquids with a (1R,2S,5R)-(-)-Menthol Substituent.
Andresová, Adéla ; Bendová, Magdalena ; Schwarz, Jaroslav ; Wagner, Zdeněk
In this work, MG is used in data analysis in a comprehensive physico-chemical characterization of the chiral ionic liquids of a 3-alkyl-1[(1R,2S,5R)-(-)-menthoxymethyl]imidazolium bis(trifluoromrthylsulfonyl)imides homologous series with a linear alkyl substituent ranging from the methyl uo to the dodecil group.
Fulltext: Download fulltextPDF

National Repository of Grey Literature : 35 records found   1 - 10nextend  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.