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Search Results: 1 - 10 of 540 matches for " Romana Slámová "
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Strategie adaptace na hydrologické dopady změny klimatu
Romana Slámová, Marta Martínková, Valentina Krysanova
Journal of Hydrology and Hydromechanics , 2010, DOI: 10.2478/v10098-010-0022-0
Abstract: In the context of discussed global climate change the emphasis is placed mainly on the adaptability of the water management methodology at present time. Therefore a questionnaire inquiry oriented to the perception of the climate change impact and current state of adaptation strategies implementation was carried out and evaluated. The research was realised among the water management experts in six large transboundary basins: Elbe, Rhine, Guadiana, Amudaria, Orange and Nile. The questionnaire was divided into six parts concerning for example: expected climate change impacts, adaptation measures, drivers for development of adaptation strategy, adaptation barriers etc. Responses were evaluated with rating and the dominant answers and lists of priority were established. Results were evaluated looking for overall conclusions in all or almost all regions, as well as conclusions for each region. The main benefit of the research lies in the evaluation based principally on the opinions of policy makers, stakeholders and water managers in the river basins not on the climate scenarios. The outcomes have proved understanding of the climate change impact issue over all six basins, only the approach to adaptation is partly different. The historical development of water management in the basin influences the perception as well.
Climate change impact assessment on various components of the hydrological regime of the Mal e River basin
Soňa Něme ková, Romana Slámová, Václav ípek
Journal of Hydrology and Hydromechanics , 2011, DOI: 10.2478/v10098-011-0011-y
Abstract: Climate change impacts on water cycle at regional scale have been recently very investigated and discussed issue. This study focuses on changes of not only total runoff but also others water balance components: soil water content and evapotranspiration, in a monthly step. The climate change was described using outputs of two different global circulations models, ECHAM and HadCM based on two divergent scenarios (optimistic B1 and pessimistic A2) according to the IPCC. The simulation of water cycle was processed in the mesoscale Malse basin (437 km2) in southern Bohemia using distributed physically based hydrological model SWIM. The outputs for the time horizon 2050 were assessed in comparison with mean values from the representative period 1987-1998. The study indicates vulnerability against predicted changes of both temperature and precipitation patterns referred to the selected scenarios. A decrease of total runoff was expected; however, hydrological balance will be different particularly in the monthly pattern within a year. The aim of this article is to describe the impact on various hydrological balance components.
The Premerger Discrimination Between Acquirer and Target Firms = Birle me ncesi Sat n Alan ve Sat n Al nan Firmalar Aras ndaki Farkl l klar
Al?vsat MüSLüMOV
Dogus University Journal , 2001,
Abstract: This paper examines the premerger discrimination between acquirers and targets using a sample of 56 mergers from U.S. economy. The research findings indicate that acquirers and targets discriminate in terms of size, liquidity and cash flow dimensions, while no statistically significant discrimination are detected in terms of growth potential, past market returns and operating efficiency. The subsample studies show that diversifying mergers aim to exploit cash flow potential of targets, whereas related mergers focus on growth potential. The premerger financial properties of acquirer and targets bear informational clues about method of payment in mergers. Strategic analysis of portfolio shifts show that value acquirers aim to purchase companies with higher growth potential, whereas growth bidders aim to purchase companies with stronger cash flow record.
Generalized definitions of discrete stability
Lenka Slámová,Lev B. Klebanov
Mathematics , 2015,
Abstract: This article deals with different generalizations of the discrete stability property. Three possible definitions of discrete stability are introduced, followed by a study of some particular cases of discrete stable distributions and their properties.
Tempered distributions: does universal tempering procedure exist?
Lev B. Klebanov,Lenka Slámová
Mathematics , 2015,
Abstract: Since the turn of the century, there has been increased interest in the application of heavy-tailed distributions, particularly stable distributions, to problems in physics and finance. Although, the tails of stable distributions provide a better fit to real-world data, they are too fat to describe empirical distributions. To remedy this drawback of stable distributions, so-called tempered variants of stable distributions have been proposed. In this paper, we argue that the tempering should be connected to the model leading to heavy tailed distribution and propose several tempering procedures in connection with corresponding models
Discrete Stable and Casual Stable Random Variables
Lev B. Klebanov,Lenka Slámová
Mathematics , 2014,
Abstract: Here we introduce some new classes of discrete stable random variables, which are useful for understanding of a new general notion of stability of random variables called us as casual stability. There are given some examples of casual and discrete stable random variables. We also propose a class of discrete stable random variables for a description of rating of scientific work.
On discrete approximations of stable distributions
Lenka Slámová,Lev B. Klebanov
Statistics , 2014,
Abstract: In some fields of applications of stable distributions, especially in economics, it appears, that data have distributions similar to stable in a large region, but do not have such heavy tails. Our aim in this note is to propose several methods of approximation of stable distributions by some discrete distributions, which may have different tail behavior. In a sense the introduced distributions form an alternative to tempered stable distributions that combine Gaussian and stable behavior.
Stock Markets and Economic Growth : A Causality Test = Hisse Senedi Pazar ve Ekonomik Büyüme: Bir Nedensellik Testi
Cudi Tuncer GüRSOY,Al?vsat MüSLüMOV
Dogus University Journal , 2000,
Abstract: This article examines causality relationships between stock markets and economic growth based on the time series data compiled from 20 countries for the years 1981 through 1994 . Sims' causality test based on Granger definition of causality was used . At first, panel data covering all countries over the entire analysis period were used to detect the direction of causation. Secondly, causal relations were investigated for each country, in isolation, using the respective time series data.Analysis based on the panel data revealed a two-way causation between stock market development and economic growth. Country analyses, on the other hand, could not lead to precise conclusions, but suggested a somewhat stronger link between stock market development and economic growth in developing countries.
The Effects of the Asian Crisis To Turkish Manufacturing Industry : The Case of Textile, Food and Cement Industries = Asya Krizinin Türk malat Sanayisine Etkileri: Tekstil, G da ve imento Sanayileri rne i
Al?vsat MüSLüMOV,Abdülmecit KARATA?
Dogus University Journal , 2001,
Abstract: This paper hypothesizes that Asian crisis has severely affected the financial dimensions of the Turkish industries. The analysis of the financial data for 70 companies from textile, food and cement industries provides evidence to partially support this hypothesis. By principal components analysis we identified five statistical factors that is meaningful and economically significant to represent main financial dimensions contained in twenty-one financial variables of the sample firms. The discriminant analyses based on the identification of the discrimination between financial dimensions of the sample firms for pre- and post-crisis years identified that profitability margins of the export-oriented Turkish textile industry significantly decreased in post-crisis years. No statistically significant changes in financial dimensions are detected for food and cement industries in post-crisis years.
Casual Stability of Some Systems of Random Variables
Lev B. Klebanov,Lenka Slámová,Ashot Kakosyan,Gregory Temnov
Mathematics , 2014,
Abstract: Self-similarity of systems is very popular and intensively developing field during last decades. To this field belong so-called stable distributions and their generalization. In Klebanov and Sl\'amov\'a (2014) there was given an approach to define additive systems with the property of random self-similarity - casual stability (c.s.). Here we continue study the notion of casual stability for additive systems of random variables (r.v.). We also give a modification of this definition and spread them on multiplicative systems of r.v. and on the system with operations of taking minimum or maximum of r.v. The case of systems with a random number of elements is also considered.
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