657 research outputs found
Adaptivní volba parametrů stabilizačních metod pro rovnice konvekce-difúze
Get PDFTitle: Adaptive choice of parameters in stabilization methods for convection- diffusion equations Author: Bc. Petr Lukáš (e-mail: [email protected]) Department: Department of Numerical Mathematics Supervisor: Doc. Mgr. Petr Knobloch, Dr. (e-mail: [email protected]) Abstract: The aim of the work is to propose suitable approaches for adap- tive choice of parameters in stabilization methods for convection-difusion equations discretized by the finite element method. We introduce the L-SR1 method, compare it with other nonlinear methods of minimizing functions with large number of variables, and introduce and compare the adaptive methods based on minimizing of the error indicator. Keywords: Adaptive choice of parameters, finite element method, stabiliza- tion methods, convection-diffusion equation, L-SR1 method, error indicato
Utilization of Radar Echo Extrapolation for Quantitative Precipitation Forecast
Get PDFTitle: Utilization of radar echo extrapolation for quantitative precipitation forecast Author: Petr Frolík Department: Department of Meteorology and Enviroment Protection Supervisor: RNDr. Petr Novák, PhD., ČHMÚ Supervisor's e-mail address: [email protected] Abstract: At present time weather radar data are essential for national meteorological services. Utilization of this data for quantitative precipitation forecast and severe weather prediction for short period (nowcasting) becomes more and more common. Increasing interest for quantitative precipitation forecasts can be noticed in hydrological applications, where it can give early warning on flash floods and can improve large scale precipitation forecasts. This paper verifies usability of COTREC nowcasting method based on extrapolation of radar echo for quantitative precipitation forecast. Quality of COTREC forecast up to 3 hours was investigated on data from 1.4.2006 to 30.9.2006. Comparison of COTREC method with Aladin NWP model forecasts was also made. Hourly mean precipitation estimates on catchments were chosen for comparison because of verification focused mainly on utilization of the forecasts in hydrological applications. Forecasted precipitation estimates were compared with optimal operationally available precipitation estimate - adjusted radar..
Numerical solution of boundary equations by splines.
Get PDFNazcv praee: Aplikace splinu k muncrickemu fcscni okrajovych uloh Autor: Petr Stasek Katcdra (nsta,v): Katedra nnmericke inateniatiky Vetlouci bakalafske prace: Doe. RNDr. Karel Najzar, CSc (vnia.il vedoun'ho: Karel.NajzarKihiiff. euni.cz Abstrakt: V pfedlozeric praci ncjprve delinujeme spliny a uvadime jejich zakladni vlast- uosti a take konstrukci kubickeho splinu, potom so xabyvame intcrpolaci .spliny, uvadime jeji druliy a odvozujeme jakych ehyb se dupustime pfi pouziti interpolaee kubickym splinein. Vc druhe kapitolc se zabyvamc aplikaci splinu k fescni obyccjnych difcrcncialnieh rovnic, nejprve uvadime diferencialni rovnice .s pocatecni podminkou, ktere fesimc za pomoei kolokacc, potom se zabyvame diferencialniini ulohy s okrajovyini podniinkami v daneui tvaru, ktere fesimc Galerkinovou metodou za pomoci B-y])linu. Ca.stccne se take vcmvjcine stabilite metod. Na zaver uvadirn dva pfiklady jako konkretni aplikaei. Title: Numerical solution of boundary equations by splines Author: Petr Sta.sek Department: Department of Numerical Mathematics Supervisor: Doc. RNDr. Karel Najzar, CSc Supervisor's e-mail address: Karel.NajzarQmff.cuni.cz Abstract: In the present work first we define splines and report their basic properties and construction of cubic spline, then we study interpolation by splines and report..
Usage possibilities of the cloud products of satellite datasets
Get PDFTitle Usage possibilities of the cloud products of satellite datasets Author: Bc. Petr Šácha Department: Department of Meteorology and Environment Protection Supervisor: RNDr. Petr Pišoft Ph.D. Supervisor's e-mail address: [email protected] Abstract: Cloudiness plays an important role in the global energy and water cycle. In particular, the presence of clouds dominates the planetary albedo and takes part in many climate feedback processes. In this thesis a short informational overview of remote sensing, a description of EUMETSAT, satellites, which it used, its part CM- SAF and a search retrieval of current research is given at first. Then the study is focused on the cloud satellite products, especially on CFC (cloud fractional cover) and CTY (cloud type) products. Data sets of daily averages of these products are compared with the daily averages created from the surface SYNOP observations of the total cloud cover and cloud type in the area of the Czech Republic. In the case of big variances between the two examined datasets of daily averaged cloud coverage, possible causes like the sampling error, dependence on season, localization of the station and the elevation and type of cloudiness, are searched. Several statistic analyses and validation scores are computed. Finally, possibilities of the examined..
Spatially explicit farming system modelling for an efficient agri-environmental policy design
Get PDFA mathematical programming model is developed and associated to a spatial pattern index (Ripley L function) to analyse the optimal reserve design and implementation for the Little Bustard conservation in Plaine de Niort. The model structure corresponds to three spatial levels, fields, farm and landscape. Simple in terms of area representation, it is detailed in terms of farm behaviour and spatially explicit. The model is applied in a normative and in a positive way. The major findings of the normative approach relate to the trade-offs between the reserve pattern and its cost. It was found that the environmentally optimal reserve, which is randomly dispersed across the zone, is the most costly one. Within the positive approach, it is illustrated that the various reserve patterns generated within the normative approach can be obtained through relatively simple uniform contract structures. The most effective contract structure is a degressive set of two payments enabling the farms to enroll at least a small share of their land.Biodiversity, spatial optimization, mathematical programming, Environmental Economics and Policy, Farm Management,
Substances in the life of children 8–10 years old
Get PDFMiklánková Ludmila, Reich Petr, Klimešová Iva, Rechtik Zdeněk. Substances in the life of children 8–10 years old. Journal of Health Sciences. 2014;4(13):85-94. ISSN 1429-9623 / 2300-665X.
http://journal.rsw.edu.pl/index.php/JHS/article/view/2014%3B4%2811%29%3A85-94
http://ojs.ukw.edu.pl/index.php/johs/article/view/2014%3B4%2811%29%3A85-94
https://pbn.nauka.gov.pl/works/509709
DOI: 10.5281/zenodo.13246
http://dx.doi.org/10.5281/zenodo.13246
The former journal has had 5 points in Ministry of Science and Higher Education of Poland parametric evaluation. Part B item 1107. (17.12.2013).
© The Author (s) 2014;
This article is published with open access at Licensee Open Journal Systems of Radom University in Radom, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Conflict of interest: None declared. Received: 10.09.2014. Revised 15.09.2014. Accepted: 04.11.2014.
Substances in the life of children 8–10 years old
Ludmila Miklánková, Petr Reich, Iva Klimešová, Zdeněk Rechtik
Fakulta Tělesné Kultury, Univerzita Palackého v Olomouci, Česká republika
Faculty of Physical Culture, Palacký University in Olomouc, Czech Republic
Keywords: lifestyl, children, alcohol, substances, smoking
Summary
The level and quality of human’s health during lifetime is affected by many factors, for example hygienic and eating habbits, value system, physical régime, education, living conditions and job demands. The growth in usage of addictive substances among adolscents raises requirement in studying this topic even in younger age. Pilot research covered 149 children from Czech Republic at the age of 9,62. Results was obtained by project International Visegrad Fund No. 11320057. The survey was aimed on usage of addictive substances and attitudes towards them. Based on the result, we states, that children from research group have experiences especially with drinking of alcohol (wine 72,48 %; plum brandy etc. 43,62 %). Alcohol is usually offered by parents or familly members (26,17 %). An experience with smoking have 33,56 % of probands and 8,5 % from them smokes repeatedly. Alarming is fact, that some probands (5 %) was offered even a drug (marihuanna). The necessary support of preventive programs focused on active spending of leisure time and active lifestyle is obviuos. The state should support the creation and realization of these programs.Miklánková Ludmila, Reich Petr, Klimešová Iva, Rechtik Zdeněk. Substances in the life of children 8–10 years old. Journal of Health Sciences. 2014;4(13):85-94. ISSN 1429-9623 / 2300-665X.
http://journal.rsw.edu.pl/index.php/JHS/article/view/2014%3B4%2811%29%3A85-94
http://ojs.ukw.edu.pl/index.php/johs/article/view/2014%3B4%2811%29%3A85-94
https://pbn.nauka.gov.pl/works/509709
DOI: 10.5281/zenodo.13246
http://dx.doi.org/10.5281/zenodo.1324
Infant-parent psychotherapy
No full textAutor nabízístručný přehled vývoje metody společné psychoterapie dítěte a rodiče. V kazuistice společné psychoterapie čtyřleté dívky a její matky představuje některé z psychoanalytických teoretických konceptů, které tvoří základy této psychoterapeutické metody práce smalými dětmi.Based on a detailed case of the infant-parent psychotherapy of a four-year-old girl and her mother, the author presents some of the psychoanalytical concepts crucial for the specific psychotherapeutic method of work with infants and pre-school children. Petr Sakař, psychologist and psychotherapist, Brno, Czech Republic e-mail: [email protected]
Improvement of the physical elements of the star V649 Cas
Get PDFTitle: Improvement of the physical elements of the star V649 Cas Author: Jan Tarics Department: Astronomical Institute of Charles University Supervisor: Prof. RNDr. Petr Harmanec, DrSc. Supervisor's e-mail address: [email protected] Abstract: Analysis of new as well as previously published photometric and spectroscopic observations of V649 Cas led to a conclusive confirmation that the object is at least quadruple. Keywords: Stars:binaries, Stars:variables:eclipsing, Stars:individual V649 Ca
Statistická analýza cenzorovaných dat
Get PDFNazov prace: Statist icka analy/n cenzorovauych dat Antor: Monika .Ja.kubcova Katedra : Katedra pravdo])odol)iiosli a matematickej statisliky Vediici bakalarskej prace: Mgr. Petr Kla.sterecky e-itin.il veduccho: kla.stor.(i ka.rlin.niff.cuni.cz Abstrakt: Predlozena praca. podava prehlad o niektorych xakladnycli nieto- dach stat.isl.ickeho spracovania cenzorovaiiych dat. V iivodiiej kapitole uve- dieme akyni sposubom ccnzoruviUK'1 po/orovanio vxnika a pupi.seme zakladne typy cen/orova.nia,. Dalej sa oboznaminio s t'liukeijiini, ktcjre eeiixorova.ne data, popisujii a, icli v/ajomnymi v/,ta,hini. Nasleihu,1 nvedieine ne])arame- trlcke inet6(ly odluuln tyeht.o hinkcit. Uvedene odliady neskor ])ouzijeine pri koiistrukcii inter\alov S])olahli\"os(.i a ]>ri testovani hy]»)to/,. V xaverecnej kapitoh1 pripajame priklad, na ktorom deiuonst rnjeinc niektore z popi'saiiyoh inetod a spoyob praee s ( eii/orovaiiyiiii dat.a.ini v pro^,ra,ine R.. Kfueove slova: renzorovanie, eonzoroiiaiie data, funkria. pre/itia, Kaplanov- Meierov otlliad. log-rank test Title: Statistical analysis of censored data Author: Monika. Jakubcova Department.: Department of Probability and Mathematical Statistics Supervisor: Mgr. Petr KhlstenK'ky Suj)ervisor's e-mail address: klasterTikarlin.infr.cmii.cz Abstract: The presented work gives an...Nazov prace: Statist icka analy/n cenzorovauych dat Antor: Monika .Ja.kubcova Katedra : Katedra pravdo])odol)iiosli a matematickej statisliky Vediici bakalarskej prace: Mgr. Petr Kla.sterecky e-itin.il veduccho: kla.stor.(i ka.rlin.niff.cuni.cz Abstrakt: Predlozena praca. podava prehlad o niektorych xakladnycli nieto- dach stat.isl.ickeho spracovania cenzorovaiiych dat. V iivodiiej kapitole uve- dieme akyni sposubom ccnzoruviUK'1 po/orovanio vxnika a pupi.seme zakladne typy cen/orova.nia,. Dalej sa oboznaminio s t'liukeijiini, ktcjre eeiixorova.ne data, popisujii a, icli v/ajomnymi v/,ta,hini. Nasleihu,1 nvedieine ne])arame- trlcke inet6(ly odluuln tyeht.o hinkcit. Uvedene odliady neskor ])ouzijeine pri koiistrukcii inter\alov S])olahli\"os(.i a ]>ri testovani hy]»)to/,. V xaverecnej kapitoh1 pripajame priklad, na ktorom deiuonst rnjeinc niektore z popi'saiiyoh inetod a spoyob praee s ( eii/orovaiiyiiii dat.a.ini v pro^,ra,ine R.. Kfueove slova: renzorovanie, eonzoroiiaiie data, funkria. pre/itia, Kaplanov- Meierov otlliad. log-rank test Title: Statistical analysis of censored data Author: Monika. Jakubcova Department.: Department of Probability and Mathematical Statistics Supervisor: Mgr. Petr KhlstenK'ky Suj)ervisor's e-mail address: klasterTikarlin.infr.cmii.cz Abstract: The presented work gives an...Katedra pravděpodobnosti a matematické statistikyDepartment of Probability and Mathematical StatisticsMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
Physical activity in the daily regime of adolescents in the Czech republic
Get PDFReich Petr, Miklánková Ludmila, Rechtik Zdeněk. Physical activity in the daily regime of adolescents in the Czech republic. Journal of Health Sciences. 2014;4(13):104-110. ISSN 1429-9623 / 2300-665X.
http://journal.rsw.edu.pl/index.php/JHS/article/view/2014%3B4%2811%29%3A104-9110
http://ojs.ukw.edu.pl/index.php/johs/article/view/2014%3B4%2811%29%3A104-110
https://pbn.nauka.gov.pl/works/509737
DOI: 10.5281/zenodo.13248
http://dx.doi.org/10.5281/zenodo.13248
The former journal has had 5 points in Ministry of Science and Higher Education of Poland parametric evaluation. Part B item 1107. (17.12.2013).
© The Author (s) 2014;
This article is published with open access at Licensee Open Journal Systems of Radom University in Radom, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Conflict of interest: None declared. Received: 10.09.2014. Revised 15.09.2014. Accepted: 04.11.2014.
Physical activity in the daily regime of adolescents
in the Czech republic
Petr Reich, Ludmila Miklánková, Zdeněk Rechtik
Fakulta Tělesné Kultury, Univerzita Palackého v Olomouci, Česká republika
Faculty of Physical Culture, Palacký University in Olomouc, Czech Republic
Keywords: health, physical activity, adolescents
Abstract
Though today's society promotes healthy lifestyles wide range of sports , a lot of information about the prevention of social pathologies and good eating habits , we meet very often with negative effects such the inclination to sedentary life style with limited physical activity. As a group, we feel especially vulnerable children and youth . The project " Health, Fitness and education in Visegrad Countries and neighboring Countries " is focused on mapping and comparison of selected aspects of lifestyle and somatic characteristics of adolescents from Visegrad and other European countries (Poland, Czech Republic , Hungary, Slovakia and Ukraine). The principal investigator of the project is Universytet Kazimierz Wielki in Poland. The Czech Republic participated in the project 90 probands (51 boys, 39 girls). In this part of the research are presented the results obtained in the Czech Republic: the volume and intensity of physical activity. Between girls and boys were not found significant differences in the number of days/week and the average number/days of moderate physical activity during the week. The average number of minutes/day were also among probands with different gender confirmed significant differences (p ≤ 0.04). In accordance with the results of similar research results confirm a low level of physical activity among adolescent girls. The results of the project will help not only to compare data on physical activity of adolescents in individual countries, but also to examine it in the context of the effectiveness of preventive measures in the participating countries.Reich Petr, Miklánková Ludmila, Rechtik Zdeněk. Physical activity in the daily regime of adolescents in the Czech republic. Journal of Health Sciences. 2014;4(13):104-110. ISSN 1429-9623 / 2300-665X.
http://journal.rsw.edu.pl/index.php/JHS/article/view/2014%3B4%2811%29%3A104-9110
http://ojs.ukw.edu.pl/index.php/johs/article/view/2014%3B4%2811%29%3A104-110
https://pbn.nauka.gov.pl/works/509737
DOI: 10.5281/zenodo.13248
http://dx.doi.org/10.5281/zenodo.1324
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