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Wyszukujesz frazę "space variation" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Geostatistical analysis of space variation in underground water various quality parameters in Kłodzko water intake area (SW part of Poland)
Autorzy:
Namysłowska-Wilczyńska, B.
Powiązania:
https://bibliotekanauki.pl/articles/178644.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
underground water
hydrogeochemistry
quality parameters
space variation
geostatistics
Opis:
This paper presents selected results of research connected with the development of a (3D) geostatistical hydrogeochemical model of the Kłodzko Drainage Basin, dedicated to the spatial variation in the different quality parameters of underground water in the water intake area (SW part of Poland). The research covers the period 2011–2012. Spatial analyses of the variation in various quality parameters, i.e., contents of: iron, manganese, ammonium ion, nitrate ion, phosphate ion, total organic carbon, pH redox potential and temperature, were carried out on the basis of the chemical determinations of the quality parameters of underground water samples taken from the wells in the water intake area. Spatial variation in the parameters was analyzed on the basis of data obtained (November 2011) from tests of water taken from 14 existing wells with a depth ranging from 9.5 to 38.0 m b.g.l. The latest data (January 2012) were obtained (gained) from 3 new piezometers, made in other locations in the relevant area. A depth of these piezometers amounts to 9–10 m. Data derived from 14 wells (2011) and 14 wells + 3 piezometers (2012) were subjected to spatial analyses using geostatistical methods. The evaluation of basic statistics of the quality parameters, including their histograms of distributions, scatter diagrams and correlation coefficient values r were presented. The directional semivariogram function γ(h) and the ordinary (block) kriging procedure were used to build the 3D geostatistical model. The geostatistical parameters of the theoretical models of directional semivariograms of the water quality parameters under study, calculated along the wells depth (taking into account the terrain elevation), were used in the ordinary (block) kriging estimation. The obtained results of estimation, i.e., block diagrams allowed us to determine the levels of increased values of estimated averages Z* of underground water quality parameters.
Źródło:
Studia Geotechnica et Mechanica; 2016, 38, 3; 15-34
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Representation Theorem for \(\varphi\)-Bounded Variation of Functions in the Sense of Riesz
Autorzy:
Aziz, Wadie
Leiva, Hugo
Merentes, Nelson
Rzepka, Beata
Powiązania:
https://bibliotekanauki.pl/articles/746275.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Bounded variation
function of bounded variation in the sense of Riesz
variations spaces
Banach space
algebra space
Opis:
In this paper we extend the well known Riesz lemma to the class of bounded \(\varphi\)-variation functions in the sense of Riesz defined on a rectangle \(I_a^b\subset \mathbb{R}^2\). This concept was introduced in [2], where the authors proved that the space \(BV_\varphi^R (I_a^b;\mathbb{R}\) of such functions is a Banach Algebra. Moreover, they characterized also the Nemytskii operator acting in this space. Thus our result creates a continuation of the paper [2].
Źródło:
Commentationes Mathematicae; 2010, 50, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Liminal Space for Intercultural Learning: an Empirical Study among Undergraduate International Business Students
Autorzy:
Korwin-Kowalewska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/579649.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
INTERCULTURAL LEARNING
LIMINAL SPACE
PHENOMENOGRAPHY
VARIATION THEORY
SUSTAINABILITY
Opis:
The field of Intercultural Communication has attracted attention of specialists from various disciplines, including such distant fields of research as linguistics and international business studies. Most authors, however, focus on the scope of knowledge and skills in terms of learning objectives. Students’ own perspectives and various conceptions they construct with ascribed meanings, as well as the “architecture” of their learning process remain under-researched. This study provides an example of a replicable analysis of the Intercultural Communication learning process, based on subjects’ perspectives. Most participants of this study are first- and second-generation immigrants. Serious issues present in a multicultural setting based on the perception of the “Other” emerged, with implications for communication, collaboration and potential conflict. Two main transformation patterns were identified in the intercultural learning process, conditioned by mono- and multiculturalism. This study reveals a range within the self-conception transition framework, as well as the deep ontological aspect of the phenomenon. The findings extrapolated into a wider context should contribute to a more conflict-free environment in multicultural societies in general. The phenomenographic approach, variation theory and the threshold concept were applied to explore the semantics, the syntax of the learning process and the critical aspects of the transformative learning experience.
Źródło:
Studia Migracyjne - Przegląd Polonijny; 2020, 46, 2 (176); 201-226
2081-4488
2544-4972
Pojawia się w:
Studia Migracyjne - Przegląd Polonijny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On regulated functions
Autorzy:
Banaś, J.
Kot, M.
Powiązania:
https://bibliotekanauki.pl/articles/357765.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
monotonic function
function of bounded variation
step function
regulated function
Banach space
funkcja monotoniczna
funkcja o ograniczonej zmienności
funkcja krokowa
funkcja regulowana
przestrzeń Banacha
Opis:
The main purpose of this review article is to present the concept of a regulated function and to indicate the connection of the class of regulated functions with other significant classes of functions. In particular, we give a characterization of regulated functions in terms of step functions and we show that the linear space of regulated functions forms a Banach space under the classical supremum norm.
Źródło:
Journal of Mathematics and Applications; 2017, 40; 21-36
1733-6775
2300-9926
Pojawia się w:
Journal of Mathematics and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weak solutions of fractional order differential equations via Volterra-Stieltjes integral operator
Autorzy:
El-Sayed, A. M. A.
El-Sayed, W. G.
Abd El-Mowla, A. A. H.
Powiązania:
https://bibliotekanauki.pl/articles/357800.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
weak solution
mild solution
weakly Riemann-Stieltjes integral
function of bounded variation
Banach space
rozwiązanie całkowe
całka Riemanna-Stieltjesa
funkcja o ograniczonej zmienności
przestrzeń Banacha
Opis:
The fractional derivative of the Riemann-Liouville and Caputo types played an important role in the development of the theory of fractional derivatives, integrals and for its applications in pure mathematics ([18], [21]). In this paper, we study the existence of weak solutions for fractional differential equations of Riemann-Liouville and Caputo types. We depend on converting of the mentioned equations to the form of functional integral equations of Volterra-Stieltjes type in reflexive Banach spaces.
Źródło:
Journal of Mathematics and Applications; 2017, 40; 85-96
1733-6775
2300-9926
Pojawia się w:
Journal of Mathematics and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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