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Wyświetlanie 1-4 z 4
Tytuł:
The problem of cartographic representation in relation to the Polish cultural landscape
Autorzy:
Opach, Tomasz
Kwiatkowska, Joanna M.
Powiązania:
https://bibliotekanauki.pl/articles/2029431.pdf
Data publikacji:
2004-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
landscape
cultural landscape
cultural heritage
Opis:
The problem of representing the Polish cultural landscape consists of two components. The first component is the choice of content. Wishing to define the breadth of the content of a cultural landscape map, one needs to remember that it is composed of two facets. The first facet, the material result of human activity, is easily discernable in the field and easily illustrated on a map. Elements included in this facet are: sacred and secular historical structures, the spatial layout of cities, archeological sites etc. The second facet of cultural landscape needs to be considered in immaterial terms. It is difficult to illustrate on a map, because its elements do not lend themselves to being topographically situated. One could mention, for example, religions, customs and traditions, a common historical past etc. Most often, one can only indirectly speculate about this facet of the cultural landscape, on the basis of the material characteristics of the cultural landscape. The second problem related to presenting cultural landscape on a map is the choice of graphic form for the map. The problem is to a large extent tied to difficulties stemming from the necessity of maintaining semantic correctness (the relation between “symbol” and “object”). In practice, during the graphic editing of a map representing the cultural landscape, one should remember to: a) choose a scale suitable for the representation, upon which depend the degree of detail and the generalization of the content; b) correctly depict the variation boundaries, taking into account sharp and fuzzy boundaries; c) make a well-designed symbol key.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2004, 11; 301-310
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A New Concept of Multi-Scenario, Multi-Component Animated Maps for the Visualization of Spatio-Temporal Landscape Evolution
Autorzy:
Opach, Tomasz
Midtbø, Terje
Nossum, Alexander
Powiązania:
https://bibliotekanauki.pl/articles/2035478.pdf
Data publikacji:
2011-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
animated map
cartographic animation
cartographic visualization
the Kampinos Forest
Opis:
In this paper, we propose a new approach to the presentation of the spatio-temporal evolution of landscape using a multi-component multi-scenario animated map system. The concept of multi-scenario map was introduced with a few conceptual level objectives. Firstly, to facilitate understanding of geographic spatio-temporal changeability (especially landscape changeability) by the use of complex cartographic animations. Secondly, to investigate factors which influence an intuitive and effective use of multi-component cartographic applications. In relation to understanding processes, the overriding purpose was to build up a generic approach that allows users to recognize features of complex geographic phenomena. Finally, since the implementation of the concept was of importance, a prototype has been prepared.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2011, 15; 215-229
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Choropleth maps and diagram maps in atlas of cartographic presentation methods
Autorzy:
Pasławski, Jacek
Korycka-Skorupa, Jolanta
Nowacki, Tomasz
Opach, Tomasz
Szmajda, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/2035778.pdf
Data publikacji:
2012-11-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Cartographic presentation methods
choropleth map
diagram map
class selection
graduated symbol scaling
Opis:
The online Atlas kartograficznych metod prezentacji [Atlas of cartographic presentation methods, hereinafter the Atlas] is a research project being carried out at the Department of Cartography of the University of Warsaw. The aim of the project is to systematize knowledge about the use of cartographic presentation methods. This study discusses selected issues related to two of the five presentation methods analysed in the project, viz. the choropleth map and the diagram map. A rational application of two quite commonly-used presentation methods leads to a number of problems. These problems are most easily visible during attempts to program its implementation in the web-based Atlas and are largely due to the difficulties with drawing a clear boundary between what is a good and a bad map. For this reason, the system operator’s skill and eye for the graphics of semi-automated visualisation seem to be of key importance.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2012, 16, 1; 49-56
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design methods for limiting rotor losses in a fractional slot PMSM motor with high power density
Autorzy:
Wolnik, Tomasz
Opach, Szczepan
Cyganik, Łukasz
Jarek, Tomasz
Szekeres, Vojtech
Powiązania:
https://bibliotekanauki.pl/articles/2172802.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional slot motors
high power density motor
rotor losses
Opis:
Fractional slot PMSM motors enable high power density factors to be obtained provided that their electromagnetic circuit, appropriate mechanical structure and cooling system are properly designed, as well as when operating at a high frequency of power supply voltage (400–800 Hz) with high magnetic saturation and high current loads (approx. 12–15 A/mm2). Such operating conditions, especially in the case of fractional slot motors, may be the reason for excessive rotor losses, mainly in the rotor yoke and permanent magnets. One of the conditions for obtaining high values of continuous power of the motor is the reduction of these losses. This paper presents selected design methods for limiting the value of rotor losses with simultaneous consideration of their influence on other motor parameters. The analysiswas carried out for a PMSM motor with an external rotor weighting approx. 10 kg and a maximum power of 50 kW at a rotational speed of 4 800 rpm.
Źródło:
Archives of Electrical Engineering; 2022, 71, 4; 963--979
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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