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    Wyświetlanie 1-3 z 3
    Tytuł:
    Description of Measurements on Biogas Stations
    Autorzy:
    Novosad, L.
    Hradilek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/136222.pdf
    Data publikacji:
    2016
    Wydawca:
    EEEIC International Barbara Leonowicz Szabłowska
    Tematy:
    biogas station
    power analysis
    measurement database
    black out
    co-generation units
    distribution grid
    Opis:
    This paper focuses mainly on performance analysis for three biogas stations situated within the territory of the Czech Republic. This paper contains basic details of the individual biogas stations as well as description of their types. It also refers to the general description of the measurement gauge involved, with specifications of its potential use. The final part of this paper deals with the analysis of course data obtained, with special regard to voltage, current, active power and reactive power data.
    Źródło:
    Transactions on Environment and Electrical Engineering; 2016, 1, 3; 16-20
    2450-5730
    Pojawia się w:
    Transactions on Environment and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Attempt to Use Google Earth Pro Images for Selected Geodetic Works − for Example of Wolności Square in Poznań (Poland)
    Autorzy:
    Kubiak, Jarosław
    Magda, Paulina
    Powiązania:
    https://bibliotekanauki.pl/articles/43347428.pdf
    Data publikacji:
    2020-12-15
    Wydawca:
    Poznańskie Towarzystwo Przyjaciół Nauk
    Tematy:
    Global Navigation Satellite Systems
    Google Earth Pro maps
    Topographic Objects Database
    topographic descriptions
    satellite measurement
    Opis:
    The article concerns issues pertaining to satellite geodesy and the possibilities of using the available source materials such as high-resolution satellite maps for selected works which require a high degree of accuracy in determining the location of topographic objects. The purpose of the work was to indicate the potential use of Google Earth maps for selected geodetic works (preparing topographic descriptions, sketch maps) in order to facilitate and accelerate the process. Works were carried out in an urban area, Wolności Square in Poznań (Poland) where 58 checkpoints were located. In order to design them, maps from the Google system from four periods were used. The research used the Global Navigation Satellite Systems set consisting of a Leica GS08 + satellite receiver and a Leica CS15 controller, geodetic software for work design (Trimble GNSS Planning Online) and calculations (C-Geo 8) as well as cartographic materials and data obtained from the Municipal Center of Geodetic and Cartographic Documentation in Poznań: the master map, catalog data and topographic descriptions of the reference points. The results show that the accuracy of the location of points offered by Google is greater than declared by the system operators. However, it is not sufficient for applications in the assumed geodetic works.
    Źródło:
    Badania Fizjograficzne Seria A - Geografia Fizyczna; 2020, 11 (71); 65-74
    2081-6014
    Pojawia się w:
    Badania Fizjograficzne Seria A - Geografia Fizyczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on Effectiveness of Using Column-Oriented Databases in the Processing of Measurement Characteristics of an Electric Vehicle
    Autorzy:
    Czerepicki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/223980.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electric vehicle
    measurement characteristics
    IT transport systems
    NoSQL database
    pojazd elektryczny
    charakterystyki pomiarowe
    system transportu IT
    baza danych NoSQL
    Opis:
    Electric vehicles are increasingly popular means of transport. One of the most important problems of their operation is to optimize the use of a battery pack. It requires to analyze the operational characteristics of a vehicle in motion, which are stored in a database. If the measurement data are collected from many vehicles, the efficiency of their analysis is important. The objective of this article is to study the possibilities of using modern column-oriented databases in order to increase the efficiency of the analysis of selected operational characteristics of an electric vehicle. The research problem is a comparative analysis of the processing efficiency of selected measurement characteristics of an electric vehicle in relational and column-oriented data structures. Important analytical functions were formulated and recorded in the form of database queries. An experiment consisting in multiple execution of functions packages on various database structures, including a column-oriented one, was carried out. The execution time of packages and the IT system load were collected and analyzed. The analysis of the experiment results allows to conclude that the use of the column-oriented data structures made it possible to shorten the time of executing the functions analyzing the energy consumption by the electric vehicle’s drive system. Depending on the type of the analyzed characteristics of the vehicle and its method of representation in the database, a significant reduction of the analysis time compared to the relational structure was obtained. Also, a decrease in the load on the computer system during data processing on the column-oriented structures was noted. The use of the column-oriented databases in the processing and analysis of measurement operational characteristics of electric vehicles is justified and it can bring measurable effects. It should be considered that the effectiveness of solving depends on the number of the analyzed characteristics and the format of their representation in the computer.
    Źródło:
    Archives of Transport; 2019, 51, 3; 77-84
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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