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Wyszukujesz frazę "Yang, W." wg kryterium: Autor

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    Wyświetlanie 1-8 z 8
    Tytuł:
    On the dynamics of a vaccination model with multiple transmission ways
    Autorzy:
    Liao, S.
    Yang, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/331029.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    vaccination model
    stability
    equilibrium
    model szczepień
    stabilność
    równowaga
    Opis:
    In this paper, we present a vaccination model with multiple transmission ways and derive the control reproduction number. The stability analysis of both the disease-free and endemic equilibria is carried out, and bifurcation theory is applied to explore a variety of dynamics of this model. In addition, we present numerical simulations to verify the model predictions. Mathematical results suggest that vaccination is helpful for disease control by decreasing the control reproduction number below unity.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 761-772
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An investigation of the preparation and performance of microcellular combustible material
    Autorzy:
    Yang, W.
    Li, Y.
    Ying, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/358391.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    microcellular combustible material
    supercritical CO2
    pressure quench method
    vulnerability behaviour
    closed vessel test
    Opis:
    Microcellular combustible materials, based on poly(methyl methacrylate) (PMMA) bonded RDX, were fabricated by the pressure quench method using supercritical CO2. After foaming, the bulk density, porosity, expansion ratio and cell density were analyzed. Scanning Electron Microscopy (SEM) has also been used to investigate the influence of the foaming conditions (temperature, saturation pressure and depressurization time) and the RDX ratio on the porous structure. The skin-core structure was also observed after the pressure quench process. The mechanical sensitivities and burning performance were investigated by the friction sensitivity test, the impact sensitivity test and the closed vessel test, respectively.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 2; 257-269
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geophysical prediction technology based on Organic Carbon Content in source rocks of the Huizhou sag, the South China Sea
    Autorzy:
    Yang, W.
    Gong, X.
    Peng, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/259890.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    Huizhou sag
    source rock
    TOC
    separate-frequency inversion
    geophysical prediction
    Opis:
    Due to the high exploration cost, limited number of wells for source rocks drilling and scarce test samples for the Total Organic Carbon Content (TOC) in the Huizhou sag, the TOC prediction of source rocks in this area and the assessment of resource potentials of the basin are faced with great challenges. In the study of TOC prediction, predecessors usually adopted the logging assessment method, since the data is only confined to a “point” and the regional prediction of the source bed in the seismic profile largely depends on the recognition of seismic facies, making it difficult to quantify TOC. In this study, we combined source rock geological characteristics, logging and seismic response and built the mathematical relation between quasi TOC curve and seismic data based on the TOC logging date of a single well and its internal seismic attribute. The result suggested that it was not purely a linear relationship that was adhered to by predecessors, but was shown as a complicated non-linear relationship. Therefore, the neural network algorithm and SVMs were introduced to obtain the optimum relationship between the quasi TOC curve and the seismic attribute. Then the goal of TOC prediction can be realized with the method of seismic inversion.
    Źródło:
    Polish Maritime Research; 2017, S 2; 4-13
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analytic Equation of State and Thermodynamic Properties, for α-, β-, and γ-Si₃N₄ Based on Analytic Mean Field Approach
    Autorzy:
    Wang, L.
    Sun, J.
    Yang, W.
    Tian, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1812044.pdf
    Data publikacji:
    2008-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.10.+h
    65.40.-b
    61.66.Fn
    Opis:
    The analytic mean field potential approach is applied to α-, β-, and γ-Si₃N₄. The analytic expressions for the Helmholtz free energy, internal energy, and equation of state were derived. The formalism for the case of the Morse potential is used in this work. Its six potential parameters are determined through fitting the compression experimental data of α-, β-, and γ-Si₃N₄. The calculated compression curves of α-, β-, and γ-Si₃N₄ are in good agreement with the available experimental data. This suggests that the analytic mean field potential approach is a very useful approach to study the thermodynamic properties of Si₃N₄. Furthermore, we predict the variation of the free energy and internal energy with the molar volume at several higher temperatures and calculate the temperature dependence of the molar volume, bulk modulus, thermal expansion coefficient and isochoric heat capacity at zero pressure.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 4; 807-818
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model of eco-water driving force affecting the evolvement of runoff in the upper Minjiang River Basin
    Autorzy:
    Jin, H.
    Yang, W.
    Li, P.
    Ashraf, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/259476.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    eco-water
    remote sensing quantitative retrieval
    upper Minjiang River
    runoff prediction
    Opis:
    The amount of eco-water resources reflects the land surface water conservation capability, and the underlying surface condition in the hydrologic cycle. In the upper Minjiang River Basin, the amounts of eco-water resources were retrieved from remotely sensed data during 1992 to 2005. Through regression analysis between the retrieved eco-water data and the climate hydrological data mainly including the temperature, the precipitation, and the runoff in the same period, the model of eco-water driving force affecting the evolvement of runoff was established. The accuracy analysis indicates that the model can well describe the relationship between dry season runoff and its driven factors, the measured data validation proves that the model has high precision and good practicability. The eco-water remote sensing inversion provides a valid method to quantify the land surface water conservation capability, and suggests an interesting approach for the driving function quantitative researches of underlying surface factor in the hydrologic cycle.
    Źródło:
    Polish Maritime Research; 2016, S 1; 91-96
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adaptive partition-based logic simulation using GPGPU
    Autorzy:
    Zhang, M.
    Zhang, Y
    Yang, W.
    Kai, Y.
    Wei, T.
    Fan, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/398148.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    symulacja logiczna
    obliczenia strumieniowe
    GPGPU
    obliczenia ogólnego przeznaczenia na układach GPU
    CUDA
    EDA
    Automatyzacja procesu projektowania systemów elektronicznych
    logic simulation
    stream computing
    Opis:
    With the improvement of the gate complexity, the verification overhead becomes more decisive for VLSI design cost In order to reduce the simulation time, a adaptive partition based parallel method of VLSI logic simulation with GPGPU is addressed in this paper. The numerous arithmetic blocks of GPGPU is utilized simultaneously for disparate circuit macros. The partition strategy we proposed shows a sufficient flexibility to balance the different work load in parallel threads and fit the feature of GPU architecture. To explore the parallelism and locality of logic simulation further, the circuit macro is organized as stream data. The data dependency between the input and output nets in one individual logical path is handled with the shared memory of GPGPU. As for different logical paths, the dependency is processed by threads synchronization. To illustrate the performance, a serial experiments is implemented in Intel CoreDuo workstation with Nvidia GTX465 GPU board. Four typical digital circuits (LDPC, DES3, OpenRISC 1200 and OpenSPARCPARC T1) are considered as the benchmark. The result of experiments demonstrate a significant speed-up is achieved by using GPGPU parallel method, comparing with the CPU serial logic simulation. In maximal case (OpenS T1), the GPGPU parallel acceleration computes 21 times faster than serial program.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2011, 2, 4; 121-128
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal variations in the abundance and sinking flux of biogenic silica in Daya Bay, Northern South China Sea
    Autorzy:
    Zhao, X.
    Yang, W.
    Ma, H.
    Li, J.
    Chen, M.
    Fang, Z.
    Zhang, X.
    Zeng, J.
    Qiu, Y.
    Zheng, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48777.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    biogenic silica
    flux
    thorium
    seasonal variation
    shallow water
    Daya Bay
    China Sea
    Źródło:
    Oceanologia; 2019, 61, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Validating performance based critical actions in a high tech start-up
    Autorzy:
    Vuoti, V. P.
    Takala, J.
    Mäntylä, A.
    Liu, Y.
    Yang, W.
    binti Abdul Malek, N. A.
    Kronman, P.
    Kreuzer, A.
    Zafar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/406824.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sustainable competitive advantage
    sense and respond
    manufacturing strategy index
    operations strategy
    balanced critical factor index
    operations start up
    case study
    Opis:
    The objective of this study is to analyze a Finnish manufacturing case company’s operational competitiveness. A proposed analytical model based on analyses the corresponding angles of the strategic triangles (Prospector, Analyzer, and Defender). The model compares the angle differences between the strategy and resource triangles with opinions from different management groups of informants. It was found out that Normalized Scaled Critical Factor Index (NSCFI) model is more scientific comparing to formal ones through validation. Calculations based on the MSI questionnaire resulted in medium high values for the Prospector strategy both for past- and future orientation. S&R calculations regarding the past orientation resulted in low values for all strategy types, except P-NSCFI for Analyzer. Moreover this study covers a case, in where Balanced Critical Factor Index (BCFI) was used defining company annual strategy plan.
    Źródło:
    Management and Production Engineering Review; 2014, 5, 1; 74-86
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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