The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Continuous rain rate measurement in the Czech Republic is analysed by a new original method. Many useful parameters from rain statistics are evaluated (CD of rain rate, rain event and inter-event duration, correlation coefficient between 2 sites, rain attenuation, site diversity gain etc.) A way to use it in rain attenuation prediction is shown.
In the power company CEZ in the North Moravia Region (the Czech Republic) the monitoring of a number of selected parameters of the quality of electrical energy (harmonics, flicker and unbalance) is being carried out in cooperation with research laboratories of the Faculty of Electrical Engineering and Computer Science, VSB - Technical University of Ostrava. The monitoring is being carried out in a...
This paper describes the dependability evaluation of track circuit receiver. The device is a component of railway interlocking system used in Czech Republic at conventional lines. The device is based on 2oo3 principle for high dependability. The reliability analysis, model and safety characteristics calculations of this device are described. Markov chain model is used for the reliability analysis.
Semantic computing aims to connect the intention of humans with computational content. We present a study of a problem of this type: extract information from large number of similar linguistic Web resources to compute various aggregations (sum, average,...). In our motivating example we calculate the sum of injured people in traffic accidents in a certain period in a certain region. We restrict ourselves...
This contribution compares retrieval algorithms after Mie (quick, but neglecting the real shape of rain drops) and after Oguchi (slower, but more exact) for radar forward scattering and backscatter at frequencies of 10 and 35 GHz. The retrieved quantities were drop size distribution (DSD), rain rate and attenuation (e.g. of microwave link). Measurements of drop size distributions over one year in...
The surveillance application aims at improving the quality of technology via modelling human expert behaviour in the coking plant ArcelorMittal Ostrava, the Czech Republic. Video data on several industrial processes are captured by means of a CCD camera and classified by using Latent Semantic Indexing (LSI) with the respect to etalons classified by an expert. We also study the convergence behavior...
A method for multiplex AFLP-PCR was employed to access the genetic diversity of yellow-seeded Brassica napus accessions originated from China, Czech Republic, and Poland. The AFLP-PCRs using three blended and fluorescent-labeled EcoRI+3 primers, AAC, AAG, and AC A, combing each time with one MseI+3primers CTC, CAC, CAG, CTG, CTT, and CTA, totally generated 723 peaks, of which 632 had high intension...
The Russian corporation TVEL is the supplier of nuclear fuel to Dukovany NPP (4 units PWR 440/213 - water cooler, water moderated power reactors with thermal output 1375 MW and electrical output 440 MW each). The Dukovany NPP supplies 14 TWh of electrical energy to the grid every year, purchasing the fuel for the power generation from TVEL. This supplier selection is based on the results of tenders...
In PWR fuel enrichment is permanently increased together with the content of burning absorbers with the aim to improve characteristics of burning and reduce fuel costs at the energy market. In parallel, deployment of a new generation of advanced PWR 440 fuel types implies further development of the fuel cycle of the Dukovany NPP as a more aggressive policy of fuel charges reduce fuel costs. To achieve...
The following topics are discussed: background to the erection of the Czech truck tolling system; system design and architecture; results from the first two years of operation, financial and political; charging policy development; and integration of new technology and solutions into the existing operating system including the TDP trials.
Institute of Computer Science of Masaryk University is working on the field of supporting medicine multimedia data transport archiving and processing more than ten years. Since first steps like transport of ultrasound and CT images across private fibre optics network these activities have grown up to regional PACS archive. Today more and more hospitals are participating on this project know under...
Monitoring of failures and outages in the transmission and distribution of electrical energy is necessary for determination of the reliability of network components and the supply of electrical energy to consumers. Incorrect input data leads, of course, to false results even if the correct computing method is used. The paper deals with obtaining of reliability indices of distribution network analyzing...
This paper deals with the problems of deployment modern remote-controlled (RC) switching elements in electrical distribution MV networks. These advanced elements contribute to improved reliability of operation of electrical networks as they enable operative reaction to resulting situation within the network and to secure modifications to its configuration in such manner that any possible interruption...
The aim of the paper is to inform about the requirements laid on education in the fields of Biomedical Technology and Biomedical Engineering in the connection with legal provisions on non-medical health service occupations in the Czech Republic and its compliance with the working documents on harmonization of biomedical engineering education in Europe (BIOMEDEA project). The legal provisions define...
River analysis is an important tool in geomorphology, since the drainage network is very sensitive to geological and tectonic processes. Different techniques can be applied to gather neotectonic information from DEMs. Both the drainage system in map view and longitudinal profiles extracted from DEMs were used in this study. Correlation between faults and streams can be quantified by calculating a...
This study was conducted to answer two research questions: (1) what is the spatial variability of the leaf optical properties between 400-1600 nm (hemispherical-directional reflectance, transmittance, absorption) within young Norway spruce crowns, and (2) how to design a suitable physically-based approach retrieving the total chlorophyll content of a complex coniferous canopy from very high spatial...
This paper brings out selected results of the recent survey targeted on adoption and utilization of advanced manufacturing technology in the Czech Republic. The main focus is on the phase of advanced manufacturing technology project justification and findings ascertained in the Czech Republic are compared with the outcomes of analogous surveys that were carried out earlier in the United Kingdom and...
This paper deals with an estimate of costs when two-dimensional warranty is granted. The paper includes a procedure of estimation of costs of the warranty based on a research of behavior of the customers. This procedure is applicable for an initial estimate of warranty costs or analysis regarding the extent of warranty to be provided. The practical use of the proposed method is demonstrated by an...
When planning the microwave links (i.e. reasonable transmitter power, antenna diameters, receiver noise number etc.) it is necessary to take into account the atmospheric attenuation, especially its major component that is caused by rain. According to the international conventions, the considerations are based on the cumulative distribution of the atmospheric attenuation. This contribution shows some...
The aim of this article is brief information about perspectives and futurity of the STEP standard (ISO 10303) in the Czech Republic especially. At present time it is not possible to ignore an important role of international standards in electronic product industry. One of the most important standards in this area is an international ISO 10303 standard also known as a STEP. The term STEP is a short...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.