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 "Popa, C." wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-10 z 10
    Tytuł:
    Regularized Han-type Algorithms for Inconsistent Maritime Container Transportation Problems
    Autorzy:
    Carp, D.
    Popa, C.
    Şerban, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/117319.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Algorithm
    Regularized Han-Type Algorithms
    Han-type Algorithms
    Container
    Maritime Container Transportation
    Container Transport
    Transportation System
    mathematical model
    Opis:
    In this paper we analyse several ways to compute the weights from the Regularized Han (RH) algorithm, the regularized version of Han’s algorithm for approximating the least squares solutions of inconsistent (incompatible) systems of linear inequalities. We tested our approaches on a classical transportation problem, aiming to provide a cost optimized solution to real world transportation problems, which often are unbalanced and inconsistent.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8 no. 4; 579-583
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A general iterative solver for unbalanced inconsistent transportation problems
    Autorzy:
    Carp, D.
    Popa, C.
    Serban, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/223848.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inconsistent linear inequalities
    least squares solutions
    projection-type algorithm
    Kaczmarz Extended
    transportation problem
    simplex algorithm
    Han’s algorithm
    problemy transportowe
    algorytm Simplex
    algorytm Hana
    Opis:
    The transportation problem, as a particular case of a linear programme, has probably the highest relative frequency with which appears in applications. At least in its classical formulation, it involves demands and supplies. When, for practical reasons, the total demand cannot satisfy the total supply, the problem becomes unbalanced and inconsistent, and must be reformulated as e.g. finding a least squares solution of an inconsistent system of linear inequalities. A general iterative solver for this class of problems has been proposed by S. P. Han in his 1980 original paper. The drawback of Han’s algorithm consists in the fact that it uses in each iteration the computation of the Moore-Penrose pseudoinverse numerical solution of a subsystem of the initial one, which for bigger dimensions can cause serious computational troubles. In order to overcome these difficulties we propose in this paper a general projection-based minimal norm solution approximant to be used within Han-type algorithms for approximating least squares solutions of inconsistent systems of linear inequalities. Numerical experiments and comparisons on some inconsistent transport model problems are presented.
    Źródło:
    Archives of Transport; 2016, 37, 1; 7-13
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some Aspects Concerning the "Memorization Effect" in Complex Fluid
    Autorzy:
    Agop, M.
    Ochiuz, L.
    Timofte, D.
    Barlescu, V.
    Danila, M.
    Gheorghita, L.
    Paun, V.
    Solovastru, L.
    Popa, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1204873.pdf
    Data publikacji:
    2014-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    05.45.Df
    47.53.+n
    03.65.-w
    Opis:
    In the frame of a non-standard scale relativity model, the specific momentum, states density and internal energy conservations laws are obtained. The chaoticity, either through turbulence in the fractal hydrodynamics approach, or through stochasticization in the Schrödinger type approach, is generated only by the non-differentiability of the movement trajectories of the complex fluid entities. Using the conservation laws mentioned above, by numerical simulations, hysteretic type effects (dynamics of hysteretic cycles) occur.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 3; 663-669
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermionic vacuum arc diagnostic using emissive probe
    Autorzy:
    Tiron, V.
    Aniculaesei, C.
    Popa, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/385290.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    thermionic vacuum arc
    emissive probe
    Opis:
    In this paper, experimental results are presented on study of the copper thermionic vacuum arc using emissive probe. Experimental results show that plasma potential is direct related to the discharge voltage and it shows nonlinear distribution from the anodic melted spot towards to the plasma extremity.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 147-149
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The radial growth-competition relationship in Picea abies stands affected by windfall
    Autorzy:
    Badea, O.
    Dumitru, I.
    Cojocia, C.
    Popa, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/41406.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Norway spruce
    stand
    Picea abies
    windfall
    risk factor
    Opis:
    Actual status of mountain forests especialy, of Norway spruce (Picea abies Karst. (L)) stands is a result of combined action between forest management measures and biotic and abiotic risk factors. In this context, tree growth dynamics is a result of multifactor interaction (competition, disturbance, management practice, climate etc.). Wind damage affect the stand structure and normal ecosystem functions including the relationship between individual tree growth and competition processes. Though, it is recorded a diminishing of productive capacity for affected stands as well as a significant diameter increment for remaining standing trees. The correlation between tree growth (cumulate basal area increment in the last 10 years) and competition (Hegyi and Schutz competition indices) was analysed in stands with different windfall intensity. No relationship between tree growth and competition was observed in highly affected stands. Schutz competition index explains better individual tree growth comparing with Hegyi index in low or no-affected stand by windthrow. The variability of the basal area increment (lnΔɡ10), explained by competition indices, is rather low (<2%) in the stand that had been highly affected by windfall, regardless of the selected competition index. Thus, significant reduction of the stand density related to number of trees (low density), as a consequence of high intensity windfalls, crown competition has a very small influence on the basal area increment comparing with situations met in low (high density) and moderate (medium density) affected stands.
    Źródło:
    Dendrobiology; 2015, 73
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurements of plasma diffusion coefficient in Pilot-PSI device using Katsumata probe
    Autorzy:
    Solomon, M. L.
    Mihaila, I.
    Anita, V.
    Costin, C.
    Popa, G.
    van der Meiden, H.
    Al, R.
    van Rooij, G.
    Cardozo, N. L.
    Rapp, J.
    Ionita, C.
    Stärz, R.
    Schrittwieser, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/385269.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    Katsumata probe
    magnetized plasma
    diffusion coefficient
    Opis:
    Cross-field transport of particles and energy is a major issue in magnetized fusion-relevant plasmas, due to its relevance for plasma confinement. In this paper Katsumata probe measurements performed in Pilot-PSI linear magnetized plasma device are presented. The plasma diffusion coefficient in perpendicular direction to the magnetic field was estimated from the measurements.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 160-162
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An early Middle Anisian (Middle Triassic) Tubiphytes and cement crusts-dominated reef from North Dobrogea (Romania): facies, depositional environment and diagenesis
    Autorzy:
    Popa, L.
    Panaiotu, C. E.
    Grădinaru, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/138920.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Anisian (Middle Triassic)
    Carbonate slope
    Microbialites
    Tubiphytes-buildup
    North Dobrogea
    Romania
    anizyk
    trias środkowy
    Tubiphytes
    Dobrudża
    Rumunia
    Opis:
    A well-developed Triassic carbonate platform is exposed in the eastern part of the Tulcea Unit, in the Cimmerian North Dobrogean Orogen, southeastern Romania. Facies analysis of the 200 m thick succession of lower Middle Anisian limestones exposed in a large limestone quarry south of the village of Mahmudia suggests a transition from upper slope towards toe-of-slope carbonate facies, reflecting sea-level fluctuations and tectonic tilting. The slope is dominated by in situ microbialites in the upper portion, consisting of reefal boundstone facies, and by molluscan coquina and cement boundstones. A key role is played by the cosmopolitan micro-encruster Tubiphytes, which became common in the aftermath of the mass extinction at the Permian/Triassic boundary, and by autochthonous micrite and synsedimentary marine cement. The absence of metazoan reef builders, such as sponges and corals, reflects the fact that microbes were the first organisms to recover after the Permian/Triassic crisis under unusual marine conditions and that their main role in reef formation was sediment stabilization along the upper slopes. The lower slope is mostly detrital, being dominated by platform-derived bioclastic rudstones and crinoidal floatstones, which are interbedded with basinal carbonate hemipelagics. The toe-of-slope is composed of pelagic wackestones framed by thin tongues of intraclast breccia. All these observations are in agreement with the slopeshedding model described for the Pennsylvanian microbial margin in Asturias (northern Spain) and the Anisian– Ladinian flat-topped, steep-rimmed Latemar platform (Dolomites, Italy). As most of the Anisian reefs were described from western and eastern Tethys (Southern Alps, Hungary, China), the occurrence of the early Middle Anisian Tubiphytes-reef from North Dobrogea (Romania) contributes to resolving the puzzle of the geographic distribution of reef recovery in the Middle Triassic.
    Źródło:
    Acta Geologica Polonica; 2014, 64, 2; 189-206
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An analysis on the velocity of dust particles in the plate-type electrostatic precipitators used in thermoelectric power plants
    Autorzy:
    Popa, G. N.
    Şora, I.
    Dinis, C. M.
    Deaconu, S. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/207451.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    electrostatic precipitators
    mathematical models
    thermoelectric power plants
    dust particles
    gas velocity
    power plant
    elektrofiltry
    model matematyczny
    elektrownia
    cząstki pyłu
    prędkość gazu
    Opis:
    Experimental data collected from different plate-type electrostatic precipitators used in a thermoelectric power plant has been analyzed. The following parameters were considered: the collection efficiency, average migration velocity of dust particles, velocity distribution of the gas in the input and output channels of precipitators. The average migration velocity of dust particles can be estimated using various mathematical models, and the gas velocity can be computed using the velocity distributions from the input channels of the precipitators. The traveling time of dust particles between the electrodes is smaller than the traveling time along the precipitator sections.
    Źródło:
    Environment Protection Engineering; 2014, 40, 1; 85-102
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the rail-based freight corridor between CE and SEE regions and the main obstacles on Romanian territory
    Określenie głównych przeszkód na terytorium Rumunii dla korytarza towarowego opartego na transporcie szynowym pomiędzy regionami CE i SEE
    Schienen-basierter Güterkorridor zwischen zentral und Südosteuropa und die Haupthindernisse auf rumänischen gebiet
    Autorzy:
    Popa, M.
    Schmidt, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/374595.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    FLAVIA project
    intermodal transport corridors
    European transnational fright flows
    projekt FLAVIA
    intermodalne korytarze transportowe
    przepływ ładunków
    Opis:
    The project “Freight and Logistics Advancement in Central/South-East Europe - Validation of trade and transport processes, Implementation of improvement actions, Application of co-coordinated structures” (in short - FLAVIA) is carried out under the Central Europe – Cooperation for Success Programme, cofunded by the European Regional Development Fund. One of the main objectives of FLAVIA project is to consolidate a logistic corridor from Central Europe (CE) to the South-East Europe (SEE) and the Black Sea Region, based on rail and inland waterways intermodal transport. In this paper we discuss the partial outputs of FLAVIA project, mainly related to the identified actual status of rail-based intermodal transport and trade obstacles of the freight flows on the Romanian territory and the used methodology. Several operational and long-term measures to improve the trade and intermodal transport are listed, considering the advantages of the geo-strategic potential of Romania location, connected with the several improvement directions already considered into the new released intermodal strategy.
    Das Projekt “Freight and Logistics Advancement in Central/South-East Europe - Validation of trade and transport processes, Implementation of improvement actions, Application of co-coordinated structures” (kurz FLAVIA) wird im Rahmen des CENTRAL EUROPE – Cooperation for success Programme realisiert, gefördert duch den Europäischer Fonds für regionale Entwicklung (EFRE). Eines der Hauptvorhaben von FLAVIA ist es, den logistischen Korridor von Zentraleuropa nach Südosteuropa und die Schwarzmeerregion unter Einbeziehung von intermodalen Verkehren zu stärken. In diesem Paper setzen wir uns mit Teilergebnissen des FLAVIA Projekts auseinander. Die Diskussion bezieht sich hauptsächlich auf im Projekt identifizierte Handels- und Transportbarrieren im intermodalen Schienenverkehr in Rumänien sowie die hierfür verwendete Methodik. Verschiedene operative und längerfristige Maßnahmen um den Handel und den Transport zu verbessern werden betrachtet unter der Berücksichtigung des geo-strategischen Potentials des rumänischen Standorts. Dabei wird Bezug auf die neulich verabschiedete intermodale Strategie und deren Wirkrichtungen genommen.
    Źródło:
    Transport Problems; 2013, 8, 1; 47-56
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

      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