Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Luna, A." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-7 z 7
    Tytuł:
    Three-level modulation techniques to reduce instantaneous common mode voltage in induction machines
    Autorzy:
    Cusidó, J.
    Luna, A.
    Busquets, S.
    Bordonau, J.
    Rodríguez, P.
    Romeral, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/262817.pdf
    Data publikacji:
    2007
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Tematy:
    common mode voltages
    multilevel inverter
    drive systems
    Opis:
    Problems on inverter motor drives such as bearing currents are introduced due to common mode voltages. Different solutions are proposed on literature, for two-level or multilevel inverter. Instantaneous zero common mode voltage by using a three-level inverted could be achieved. This paper proposes a commutation strategy that allows zero common mode voltage by using medium vectors, and also a new representation as a plane on the commutation space is defined which is called zero common mode voltage plane. On this defined plane, every turning vector fulfil this property. Simulations and experimental results clearly show method's efficiency.
    Źródło:
    Electrical Power Quality and Utilisation. Journal; 2007, 13, 2; 33-38
    1896-4672
    Pojawia się w:
    Electrical Power Quality and Utilisation. Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in masa and tortillas obtained from maize irradiated and nixtamalized with nejayote
    Autorzy:
    Valderrama-Bravo, C.
    Domínguez-Pacheco, F.A.
    Hernandez-Aguilar, C.
    Sanchez-Hernandez, G.
    Perez-Reyes, C.
    Contreras-Padilla, M.
    Rojas-Gonzalez, T.
    Oaxaca-Luna, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24252.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Źródło:
    International Agrophysics; 2018, 32, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distinguishing Quaternary glyptodontine cingulates in South America: How informative are juvenile specimens?
    Autorzy:
    Luna, C.A.
    Cerda, I.A.
    Zurita, A.E.
    Gonzalez, R.
    Prieto, M.C.
    Mothe, D.
    Avila, L.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/20747.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    The subfamily Glyptodontinae (Xenarthra, Cingulata) comprises one of the most frequently recorded glyptodontids in South America. Recently, the North American genus Glyptotherium was recorded in South America, in addition to the genus Glyptodon. It has been shown that both genera shared the same geographic distribution in central-north and eastern areas of South America (Venezuela and Brazil, respectively). Although some characters allow differentiation between adult specimens of both genera, the morphological distinction between these two genera is rather difficult in juvenile specimens. In this contribution, a detailed morphological, morphometric and histological survey of a juvenile specimen of Glyptodontinae recovered from the Late Pleistocene of northern Brazil is performed. The relative lower osteoderms thickness, the particular morphology of the annular and radial sulci and the distal osseous projections of the caudal osteoderms suggest that the specimen belongs to the genus Glyptotherium. In addition, the validity of some statistical tools to distinguish between different ontogenetic stages and in some cases between genera is verified. The osteoderm microstructure of this juvenile individual is characterized by being composed of a cancellous internal core surrounded by a compact bone cortex. Primary bone tissue mostly consists of highly vascularized, woven-fibered bone tissue. Unlike that observed in adult Glyptodontinae, both the Sharpey fibers and the fibrous and laminar parallel bone tissue as secondary bone are absent. This study enhances our knowledge about those morphological and histological changes that occur through the ontogeny in glyptodonts.
    Źródło:
    Acta Palaeontologica Polonica; 2018, 63, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physicochemical characterization of flours and rheological and textural changes of masa and tortillas obtained from maize fertilized with nejayote and ovine manure
    Autorzy:
    Valderrama Bravo, M.C.
    Cornejo Villegas, M.A.
    Zambrano Zaragoza, M.L.
    Dominguez Hernandez, M.E.
    Zepeda Bautista, R.
    Oaxaca Luna, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082903.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    ovine manure
    nejayote
    pasting profiles
    rheological
    parameters
    masa
    tortilla
    Opis:
    The agronomic management of maize (Zea mays L.) modifies the structure and composition of maize grain and its products like flour, masa, and tortillas. Results have shown that the protein content in flour obtained from maize grains treated with nejayote applied at 150 m3 ha-1 (10.36 g × 100 g-1) and nejayote applied at 75 m3 ha-1 with ovine manure applied at 25 t ha-1 (10.17 g × 100 g-1) was higher than that determined in flour treated with chemical fertilizer (10.05 g × 100 g-1). The flours obtained from maize fertilized without nejayote showed the highest viscosity values and the lowest values were for chemical fertilizer (2816 mPa s) and 75 m3 ha-1 of nejayote with ovine manure applied at 25 t ha-1 (2498 mPa s). The highest elastic and viscous moduli were obtained for masa with the following fertilization regimes: 75 m3 ha-1 of nejayote with 25 t ha-1 of ovine manure, and 150 m3 ha-1 of nejayote with 25 t ha-1 of ovine manure and the lowest values of these parameters were obtained for 75 m3 ha-1 of nejayote with 50 t ha-1of ovine manure. The cohesiveness of masa was the lowest for maize fertilized with nejayote applied at 75 to 150 m3 ha-1, and 50 t ha-1 of ovine manure. The highest concentration of 150 m3 ha-1 for nejayote and the lowest level for ovine manure applied at 25 t ha-1 had a positive influence on the production of nixtamal and tortilla.
    Źródło:
    International Agrophysics; 2020, 34, 2; 241-252
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uncertainty and accuracy of vision-based tracking concerning stereophotogrammetry and noise-floor tests
    Autorzy:
    Ngeljaratan, Luna
    Moustafa, Mohamed A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2051854.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stereophotogrammetry
    noise-floor
    vision-based tracking
    displacement
    uncertainty
    accuracy
    Opis:
    This work proposes a systematic assessment of stereophotogrammetry and noise-floor tests to characterize and quantify the uncertainty and accuracy of a vision-based tracking system. Two stereophotogrammetry sets with different configurations, i.e., some images are designed and their sensitivity is quantified based on several assessments. The first assessment evaluates the image coordinates, stereo angle and reconstruction errors resulting from the stereophotogrammetry procedure, and the second assessment expresses the uncertainty from the variance and bias errors measured from the noise-floor test. These two assessments quantify the uncertainty, while the accuracy of the vision-based tracking system is assessed from three quasi-static tests on a small-scaled specimen. The difference in each stereophotogrammetry set and configuration, as indicated by the stereophotogrammetry and noise-floor assessment, leads to a significant result hat the first stereophotogrammetry set measures the RMSE of 3.6 mm while the second set identifies only 1.6 mm of RMSE. The results of this work recommend a careful and systematic assessment of stereophotogrammetry and noise-floor test results to quantify the uncertainty before the real test to achieve a high displacement accuracy of the vision-based tracking system.
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 1; 75-92
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Advances in parallel heterogeneous genetic algorithms for continuous optimization
    Autorzy:
    Alba, E.
    Luna, F.
    Nebro, A. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/907622.pdf
    Data publikacji:
    2004
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    algorytm genetyczny
    optymalizacja ciągła
    konwergencja przedwczesna
    parallel genetic algorithms
    continuous optimization
    premature convergence
    heterogeneity
    Opis:
    In this paper we address an extension of a very efficient genetic algorithm (GA) known as Hy3, a physical parallelization of the gradual distributed real-coded GA (GD-RCGA). This search model relies on a set of eight subpopulations residing in a cube topology having two faces for promoting exploration and exploitation. The resulting technique has been shown to yield very accurate results in continuous optimization by using crossover operators tuned to explore and exploit the solutions inside each subpopulation. We introduce here a further extension of Hy3, called Hy4, that uses 16 islands arranged in a hypercube of four dimensions. Thus, two new faces with different exploration/exploitation search capabilities are added to the search performed by Hy3. We analyze the importance of running a synchronous versus an asynchronous version of the models considered. The results indicate that the proposed Hy4 model overcomes the Hy3 performance because of its improved balance between exploration and exploitation that enhances the search. Finally, we also show that the async Hy4 model scales better than the sync one.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2004, 14, 3; 317-333
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exploring Alternatives for Sustainable Development in the Tamiahua Wetlands
    Autorzy:
    Luna-Reyes, Luis Felipe
    Durán-Encalada, Jorge A.
    Bandala, Erick R.
    Powiązania:
    https://bibliotekanauki.pl/articles/475159.pdf
    Data publikacji:
    2013
    Wydawca:
    Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
    Tematy:
    sustainable development
    Wetlands
    Mexico
    Tamiahua
    Opis:
    This article presents a preliminary System Dynamics model developed to analyze the sustainability of a natural reserve in Mexico: the Tamiahua Wetlands. Wetlands are often referred to as nature’s kidneys because they filter contaminants from water. In spite of their importance, wetlands are endangered areas around the world. In order to build the model we take into account the Fishbanks model developed by Meadows (2004) as a starting point. Then, the model considers variables related to changes in total and economically active populations, and contaminants in water. The preliminary model presented in this study implies that fishing activity in the Tamiahua Wetlands, together with contaminants from human activity, have the potential to damage the diversity of species in the ecosystem, endangering its sustainability. Continued work on the model is intended to explore appropriate ways of preserving Tamiahua, providing inhabitants with economic activities that promote the sustainability of the region.
    Źródło:
    Journal of Entrepreneurship, Management and Innovation; 2013, 9, 2; 5-28
    2299-7075
    2299-7326
    Pojawia się w:
    Journal of Entrepreneurship, Management and Innovation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies