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Wyszukujesz frazę "Gajda, J" wg kryterium: Autor

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    Wyświetlanie 1-10 z 10
    Tytuł:
    A highly selective vehicle classification utilizing dual-loop inductive detector
    Autorzy:
    Gajda, J.
    Stencel, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/221403.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inductive loop detectors
    magnetic signature
    vehicle classification
    Opis:
    In general, currently employed vehicle classification algorithms based on the magnetic signature can distinguish among only a few vehicle classes. The work presents a new approach to this problem. A set of characteristic parameters measurable from the magnetic signature and limits of their uncertainty intervals are determined independently for each predefined class. The source of information on the vehicle parameters is its magnetic signature measured in a system that enables independent measurement of two signals, i.e. changes in the active and reactive component of the inductive loop impedance caused by a passing vehicle. These innovations result in high selective classification system, which utilizes over a dozen vehicle classes. The evaluation of the proposed approach was carried out for good vehicles consisting of 2-axle tractor and a 3-axle semi-trailer.
    Źródło:
    Metrology and Measurement Systems; 2014, 21, 3; 473-484
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Automatic vehicle classification in systems with single inductive loop detector
    Autorzy:
    Gajda, J.
    Mielczarek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/221584.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inductive loop detectors
    magnetic signature
    vehicle classification
    classification algorithms
    Opis:
    The work proposes a new method for vehicle classification, which allows treating vehicles uniformly at the stage of defining the vehicle classes, as well as during the classification itself and the assessment of its correctness. The sole source of information about a vehicle is its magnetic signature normalised with respect to the amplitude and duration. The proposed method allows defining a large number (even several thousand) of classes comprising vehicles whose magnetic signatures are similar according to the assumed criterion with precisely determined degree of similarity. The decision about the degree of similarity and, consequently, about the number of classes, is taken by a user depending on the classification purpose. An additional advantage of the proposed solution is the automated defining of vehicle classes for the given degree of similarity between signatures determined by a user. Thus the human factor, which plays a significant role in currently used methods, has been removed from the classification process at the stage of defining vehicle classes. The efficiency of the proposed approach to the vehicle classification problem was demonstrated on the basis of a large set of experimental data.
    Źródło:
    Metrology and Measurement Systems; 2014, 21, 4; 619-630
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laser Technology and Applications 2012
    Autorzy:
    Romaniuk, R. S.
    Gajda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/226404.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lasers
    laser technology
    lasing materials
    optoelectronics
    laser theory
    laser design
    laser components
    kinds of lasers
    semiconductor laser
    VCSEL
    laser applications
    photonics
    nonlinear photonics
    active optical fibers
    optical fiber lasers
    high power lasers
    high intensity lasers
    laser atomic clocks
    Opis:
    The research and technical achievements in the area of lasers are summarized every three years by the National Symposium on Laser Technology held in the Baltic See Resort Świnoujście near Szczecin, Poland. The paper presents a review of the main symposium subjects tracks debated during this key national lase event in September 2012. There are shown developement tendencies of laser materials and technologies and laser asociated branches of optoelectronics in this country, including the efforts of academia, governmental institutes, research businesses and industry. The symposium work are divided to two branches: development of lasers and laser applications, where the laser systems operators and laser users present their achievements. Topical tracks of the meeting are presented, as well as the keynote and invited subjects delivered by key representatives of the laser industry. The STL 2012 was a jubilee meeting held for the Xth time.
    Źródło:
    International Journal of Electronics and Telecommunications; 2013, 59, 2; 195-202
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accuracy criteria for evaluation of Weigh-in-Motion systems
    Autorzy:
    Burnos, P.
    Gajda, J.
    Sroka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/221527.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Weigh-in-Motion systems
    enforcement of vehicles
    accuracy assessment
    tolerance intervals
    reliability characteristic
    Opis:
    Measurement data obtained from Weigh-in-Motion systems support protection of road pavements from the adverse phenomenon of vehicle overloading. For this protection to be effective, WIM systems must be accurate and obtain a certificate of metrological legalization. Unfortunately there is no legal standard for accuracy assessment of Weigh-in-Motion (WIM) systems. Due to the international range of road transport, it is necessary to standardize methods and criteria applied for assessing such systems’ accuracy. In our paper we present two methods of determining accuracy of WIM systems. Both are based on the population of weighing errors determined experimentally during system testing. The first method is called a reliability characteristic and was developed by the authors. The second method is based on determining boundaries of the tolerance interval for weighing errors. Properties of both methods were assessed on the basis of simulation studies as well as experimental results obtained from a 16-sensor WIM system.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 4; 743-754
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of temperature on errors of WIM systems employing piezoelectric sensor
    Autorzy:
    Gajda, J.
    Sroka, R.
    Zeglen, T.
    Burnos, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/221307.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    piezoelectric sensors
    temperature influence
    temperature error of WIM systems
    error correction
    Opis:
    The paper provides analysis of the influence of temperature on the error of weigh-in-motion (WIM) systems utilizing piezoelectric polymer load sensors. Results of tests of these sensors in a climatic chamber, as well as results of long-term tests at the WIM site, are presented. Different methods for correction of the influence of changes in temperature were assessed for their effectiveness and compared.
    Źródło:
    Metrology and Measurement Systems; 2013, 20, 2; 171-182
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Automatic Extraction of the Pelvicalyceal System for Preoperative Planning of Minimally Invasive Procedures
    Autorzy:
    Heryan, K.
    Skalski, A.
    Jakubowski, J.
    Drewniak, T.
    Gajda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/220364.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pelvicalyceal system segmentation
    kidney segmentation
    kidney compartments
    Computed Tomography (CT)
    kidney cancer
    Opis:
    Minimally invasive procedures for the kidney tumour removal require a 3D visualization of topological relations between kidney, cancer, the pelvicalyceal system and the renal vascular tree. In this paper, a novel methodology of the pelvicalyceal system segmentation is presented. It consists of four following steps: ROI designation, automatic threshold calculation for binarization (approximation of the histogram image data with three exponential functions), automatic extraction of the pelvicalyceal system parts and segmentation by the Locally Adaptive Region Growing algorithm. The proposed method was applied successfully on the Computed Tomography database consisting of 48 kidneys both healthy and cancer affected. The quantitative evaluation (comparison to manual segmentation) and visual assessment proved its effectiveness. The Dice Coefficient of Similarity is equal to 0.871 ± 0.060 and the average Hausdorff distance 0.46 ± 0.36 mm. Additionally, to provide a reliable assessment of the proposed method, it was compared with three other methods. The proposed method is robust regardless of the image acquisition mode, spatial resolution and range of image values. The same framework may be applied to further medical applications beyond preoperative planning for partial nephrectomy enabling to visually assess and to measure the pelvicalyceal system by medical doctors.
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 1; 3-18
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Road traffic parameters measuring system with variable structure
    Autorzy:
    Burnos, P.
    Gajda, J.
    Marszałek, Z.
    Piwowar, P.
    Sroka, R.
    Stencel, M.
    Żegleń, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/220542.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    traffic parameters measurement
    weigh-in-motion systems
    vehicle classification
    Opis:
    Systems of road traffic parameters measurement play a key role in the process of road traffic control, its supervision as well as in gathering and processing information for statistical purposes. Expectations of users of such systems mainly concern automation and provision of measurement continuity, possibility of selection of the measured road traffic parameters and high accuracy along with reliability of obtained results. In order to meet the requirements set for such systems, at the Department of Instrumentation and Measurement of the AGH University of Science and Technology in Cracow a new prototype system of road traffic parameters measurement - Traffic-1 - has been constructed. The innovativeness of the solution is manifested in the structure of the system that can be modified by the user adequately to current measurement needs and in the used algorithms of signals processing. The work contains a brief description of the constructed system with particular focus on the used innovations that are the result of many years of research work of the designers.
    Źródło:
    Metrology and Measurement Systems; 2011, 18, 4; 659-666
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of H2O2 and O3 on PGM Extraction from Used Car Catalysts
    Autorzy:
    Fornalczyk, A.
    Willner, J.
    Gajda, B.
    Sedlakova-Kadukova, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/356376.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    spent catalytic converters
    PGM metals
    hydrometallurgy
    O3
    H2O2
    Opis:
    Catalytic converters contain the catalytic substance in their structure, which is a mixture of Platinum Group Metals (PGMs). The prices of these metals and a growing demand for them in the market, make it necessary to recycle spent catalytic converters and recovery of PGMs. In the study, the effect of ozone and hydrogen peroxide application on the possibility of extracting PGM from used car catalysts was investigated. The catalytic carrier was milled, sieved and then the fractions with the desired grain size were treated with the appropriate HCl mixture and 3%, 5%, 10%, 15% and 30% H2O2, respectively, and the tests were also carried out at temperature 333 K. Ozone tests were conducted with the O3 flow in the range of 1,3,5 g/h. Samples for analysis were collected after 30 min, 1 h, 2 h, 3 h and after 4 h, respectively. The residue after the experiments and filtration process was also analysed. The obtained results confirmed the assumption that PGMs can be extracted using hydrochloric acid with the addition of H2O2 or ozone as oxidants. It allows to significantly intensify the carried out reactions and to improve the rate of PGMs transfer to the solution.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 2; 963-968
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical and Physical Modeling of Alloy Behavior Feeding by Pulse-Step Method to Liquid Steel in One Strand Slab Tundish
    Autorzy:
    Cwudziński, A.
    Gajda, B.
    Hutny, A.
    Jowsa, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/353009.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    tundish
    pulse-step alloying method
    liquid steel
    physical trials
    numerical modeling
    Opis:
    The main purpose of the present work was to validate the numerical model for the pulse-step liquid steel alloying method using a physical simulator that enables the observation and recording of phenomena occurring during the continuous steel casting process. The facility under investigation was a single-nozzle tundish equipped with a dam. To physical trials the glass water model was made on a scale of 2:5. For the mathematical description of turbulence during liquid steel alloying process, the k-ε and k-ω models were employed in the simulations. Based on the computer simulations and physical trials carried out, alloy addition behaviour and mixing curves for different tundish alloy addition feeding positions were obtained. The change in the location of alloy addition feeding to the liquid steel had an effect on the process of alloy addition spread in the liquid steel bulk and on the mixing time.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 4; 2081-2087
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance of transgenic pigs produced with the use of two different growth hormone gene constructs
    Autorzy:
    Rozycki, M
    Smorag, Z.
    Kopchick, J.J.
    Chen, W.Y.
    Jura, J.
    Pasieka, J.
    Orzechowska, B
    Gajda, B.
    Skrzyszowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2043872.pdf
    Data publikacji:
    1999
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pig
    transgenic pig
    gene
    performance trait
    coding gene
    genetic engineering
    growth hormone
    Źródło:
    Journal of Applied Genetics; 1999, 40, 1; 29-37
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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