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    Wyświetlanie 1-5 z 5
    Tytuł:
    Zastosowanie metody drzewa decyzyjnego w analizie problemów makroekonomicznych
    Application of the decision tree method in macroeconomics problems analysis
    Autorzy:
    Zalewska, M.
    Zalewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/398976.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    podejmowanie decyzji
    drzewa decyzyjne
    bezpośrednie inwestycje zagraniczne
    data mining
    decision making
    decision tree
    foreign direct investment
    Opis:
    Decision tree is a method of data mining analysis based on extensive set of independent variables. Main advantage of this approach is that not only does it provide an interesting visualization of the problem, but also creates a model of a very good quality. This paper presents the decision tree method in an multi-criteria analysis of determinants of foreign direct investment inflows. The analysis is based on data from the World Bank and Doing Business reports for the years 2006-2010.
    Źródło:
    Ekonomia i Zarządzanie; 2012, 4, 4; 58-69
    2080-9646
    Pojawia się w:
    Ekonomia i Zarządzanie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Od Merkatora do Space Oblique Mercator
    From Mercator to Space Oblique Mercator
    Autorzy:
    Wieczorek, M.
    Zalewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/204167.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Tematy:
    Kremer Gerard
    odwzorowanie walcowe
    odwzorowanie Merkatora
    odwzorowanie Gaussa
    conformal cylindrical projection
    Mercator projection
    Gauss projection
    Opis:
    Tematem artykułu jest historia teorii wiernokątnych odwzorowań walcowych. Zaprezentowano w nim znane odwzorowanie Merkatora oraz jego liczne modyfikacje, których autorami byli kolejno J.H. Lambert, J.L. Lagrange, J.C.F. Gauss, J.H. Kruger, M. Hotine oraz J.P. Snyder. W podsumowaniu dano tabelaryczne zestawienie nazw dotyczących tego typu odwzorowań spotykanych w polskiej i anglojęzycznej literaturze, będące próbą uporządkowania tej mocno zróżnicowanej terminologii.
    Encountered problems with the naming of projections of Mercator, Gauss, Gauss-Kruger and UTM led the authors to this attempt to systematize the terminology in the field. Gerard Kremer (Mercator) - the founder of modern cartography, who is most famous for his 1569 map of the world, was the first to apply the conformal cylindrical projection in normal aspect. Now it is referred to as Mercator projection, although Ch'ien Lo-Chih (940), Erhard Etzlaub (1511) and Edward Wright (1599) are also sometimes considered to be its authors. Henry Bond (1645) and James Gregory (1668) worked on the mathematical formula of this projection. The theory of conformal projections of a sphere onto a plane intrigued not only cartographers, but also scientists of other disciplines. In 1772 German mathematician J.H. Lambert invented differential equation, from which he developed the formula for Mercator projection in transverse aspect. Further research on conformity were conducted by French mathematician and astronomer J.L. Lagrange. In 1779 he generally solved the problem of conformal projection of an oblate surface onto a plane. He analysed a specific case of a projection of an oblate ellipsoid flattened at the poles onto a sphere, which later became known as Lagrange conformal projection. In literature it is also referred to as Mollweide's conformal projection of an ellipsoid onto a sphere. Also C. Gauss researched this field. In 1825 he elaborated a differential equation for a conformal projection of any two surfaces onto one another. He was looking for a solution, which would make it possible to relate spherical image to the projected area better 4han in the case of Lagrange's projection. The results he presented in detail for oblate ellipsoid. And it is this particular case, when an oblate ellipsoid is projected onto a sphere, which is referred to as Gauss projection. It is also referred to as a conformal transformation of a sphere on a side of a transverse cylinder, or a conformal transformation of a sphere onto a tube in transverse aspect, known as Lambert-Gauss or Mercator-Gauss projection. C. Gauss also authored a two stage projection used for triangulation, first applied in the area of Hannover (Hannover coordinates). L. Krtiger retrieved it from manuscripts and developed further; so that now it is known as Gauss-Kruger projection. It is a transverse tangent conformal cylindrical projection of an ellipsoid with the scale reduction factor along the central meridian being 1.0. In the late 1940s a variant of this projection (mo=0.9996) called UTM (Universal Transverse Mercator) was widely applied. Earlier research had been conducted on possible applications of two diagonal variants of conformal projections (M. Rosemund, M. Hotine). An ellipsoid version of diagonal Mercator projection which is scale conformal along the central meridian found wider use. It was authored by Hotine, and known as modified diagonal orthomorphic projection. It was used for presentation of images from the first series of Landsat satellites. However a tangent conformal cylindrical diagonal transverse ellipsoid projection, scale conformal along the satellite's path (mo=1.0) proved more practical for such applications. Its mathematical formula was developed by J.P.Snyder in 1981. It is usually referred to as SOM (Space Oblique Mercator) projection.
    Źródło:
    Polski Przegląd Kartograficzny; 2005, T. 37, nr 3, 3; 196-212
    0324-8321
    Pojawia się w:
    Polski Przegląd Kartograficzny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Social and economic aspects of population planning policies in the People’s Republic of China
    Społeczne i ekonomiczne aspekty polityki jednego dziecka w Chińskiej Republice Ludowej
    Autorzy:
    Zalewska, M.
    Zalewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/398802.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    China
    one child policy
    population control
    demography
    society
    gender disparities
    Chiny
    polityka jednego dziecka
    kontrola urodzeń
    demografia
    społeczeństwo
    dysproporcje płciowe
    Opis:
    In 1979 the People’s Republic of China adopted a law introducing birth control planning, which is often known as the "one-child policy” in Western countries. The policy was created and implemented because of numerous demographic and economic problems. The paper presents the assumptions behind the introduced one-child policy, multidimensional analysis of the effects of its actions and their evaluation in the context of the economic development and demographic structure of the Chinese society. It further describes the historical and economic background of the policy and its short and long-term effects in the economic and socio-demographic areas. The analysis presented is based on the World Bank databases (for demographic data comparison), and on socio-political publications from both Western countries and mainland China. The paper strives to fully present and evaluate population planning policies implemented in the PRC.
    W 1979 roku w Chińskiej Republice Ludowej przyjęto ustawę wprowadzającą kontrolę planowania urodzeń, w krajach zachodnich częściej znaną pod nazwą „polityka jednego dziecka”. Była ona odpowiedzią nowej władzy Komunistycznej Partii Chin na szereg problemów demograficznych i gospodarczych, takich jak przeludnienie, nadmierne zużycie zasobów naturalnych, niedostatek dóbr. W artykule przedstawiono założenia wprowadzonej w Chinach polityki jednego dziecka, wieloaspektową analizę jej efektów oraz ich ewaluację w kontekście ekonomicznego rozwoju i demograficznej struktury społeczeństwa chińskiego. Opisano tło historyczne i gospodarcze wprowadzonej polityki oraz jej krótko-okresowe i długookresowe skutki w kontekście gospodarczym oraz społeczno-demograficznym.
    Źródło:
    Ekonomia i Zarządzanie; 2014, 6, 4; 29-41
    2080-9646
    Pojawia się w:
    Ekonomia i Zarządzanie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of acute phase proteins in clinically healthy dairy cows in perinatal period and during lactation
    Autorzy:
    Debski, B.
    Nowicki, T.
    Zalewski, W.
    Ochota, M.
    Mrowiec, J.
    Twardon, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/31157.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The estimation of acute phase proteins (APP), which are recognized as inflammation markers is a good method for animal health monitoring. Several factors such as obesity, age and sex are also known to modulate APP status. We evaluated the influence of pregnancy and lactation in 65 clinically healthy dairy Holstein-Friesian dairy cows, 2nd÷4th lactation, chosen from 3 different dairy farms located in South West part of Poland. Bovine C-reactive protein (CRP), haptoglobin and fibrinogen were assayed using commercial ELISA kits. The highest values of CRP and haptoglobin were observed in cows during the first month after calving. The highest concentrations of fibrinogen was found in a group of cows prior to expected date of parturition and the level of this protein in blood plasma was decreasing during lactation. The significant differences of analyzed APPs among cows before delivery, during first month after calving and in lactation (1-3 months after delivery) suggested that factors like pregnancy and stage of lactation would have an influence on their concentration.
    Źródło:
    Polish Journal of Veterinary Sciences; 2016, 19, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Local Structure of Mn in $(La_{1-x}Ho_{x})_{2//3}Ca_{1//3}MnO_{3}$ Studied by X-ray Absorption Fine Structure
    Autorzy:
    Pietnoczka, A.
    Pękała, M.
    Bacewicz, R.
    Drozd, V.
    Fagnard, J.
    Vanderbemden, P.
    Antonowicz, J.
    Zalewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1538864.pdf
    Data publikacji:
    2010-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cj
    75.47.Lx
    87.64.kd
    Opis:
    Results of X-ray absorption fine structure measurements in manganites $(La_{1-x}Ho_{x})_{2//3}Ca_{1//3}MnO_{3}$ with 0.15 < x < 0.50 are presented. When $LaMnO_{3}$ is doped with a divalent element such as $Ca^{2+}$, substituting for $La^{3+}$, holes are induced in the filled Mn d orbitals. This leads to a strong ferromagnetic coupling between Mn sites. Ca ions in $La_{1-x}Ca_{x}MnO_{3}$ introduce a distortion of the crystal lattice and mixed valence Mn ions ($Mn^{3+}$ and $Mn^{4+}$). On the other hand, in manganites $(La_{1-x}Ho_{x})_{2//3}Ca_{1//3}MnO_{3}$ the substitution of La for Ho causes a lattice distortion and induces a disorder, which reduces a magnetic interaction. The ferromagnetic transition temperature and conductivity decrease very quickly with increasing x. The magnetic and transport properties of compounds depend on the local atomic structure around Mn ions. The information on the bond lengths and Debye-Waller factor are obtained from the extended X-ray absorption fine structure (EXAFS) data analysis. The charge state of Mn is determined from the position of the absorption edge in X-ray absorption near edge structure (XANES) data. XAFS results are in good agreement with magnetic characteristics of the studied materials.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 2; 281-285
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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