Temat: local model - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A new 2d single series model of transverse vibration of a multi-layered sandwich beam with perfectly clamped edges
Nowy dwuwymiarowy pojedyńczo szeregowy model drgań poprzecznych wielowarstwowej belki sandwiczowej z idealnie utwierdzonymi krawędziami
Autorzy:: Karczmarzyk, S.
Powiązania:: https://bibliotekanauki.pl/articles/279954.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: sandwich beam
perfect clamping
transverse vibration
local model
Opis:: A new two-dimmensional, single series local model of the transverse vibration of a multi-layer, one-span sandwich beam composed of isotropic layers with ideally (perfectly) clamped ends is proposed in the paper. The model is derived within the local theory of linear elastodynamics and it is composed of two two-dimmensional fields and of two approximations of three-dimmensional fields satisfying exactly the equations of motion as well as the Saint-Venant compatibility equations of the theory. All through-the-thickness boundary conditions of the local theory of elastodynamics as well as all local compatibility equations (for the displacements and stresses) between adjoining layers are fulfiled in the model. Both the cross-sectional warping and the transverse compliance(s) in each layer of the beam are taken into account, thus the model is applicable to the classical three-layer sandwich beam and to a multi-layer sandwich or laminated narrow structure.
W tej pracy jest przedstawiony nowy dwuwymiarowy, pojedyńczo szeregowy, lokalny model drgań poprzecznych wielowarstwowej, jednoprzęsłowej belki sandwiczo- wej, złożonej z warstw izotropowch, z idealnie utwierdzonymi końcami. Model ten, otrzymany w ramach lokalnej teorii liniowej elastodynamiki, składa się z dwóch pól dwuwymiarowych i dwóch aproksymacji pól trójwymiarowych spełniających ściśle równania ruchu oraz warunki zgodności Saint-Venanta. W modelu zostały spełnione wszystkie warunki brzegowe po grubości, jak również lokalne warunki ciągłości (przemieszczeń i naprężeń) między przylegającymi warstwami. Uwzględniono deplanacje przekrojowe, jak też poprzeczne podatności każdej warstwy i dlatego model ten jest stosowalny zarówno do klasycznej trójwarstwowej belki sandwiczowej, jak i do wielowarstwowej struktury sandwiczowej czy laminatowej.
Źródło:: Journal of Theoretical and Applied Mechanics; 2010, 48, 3; 789-812
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Comparison of the dynamic riveting process of a rivet with and without a compensator
Autorzy:: Szymczyk, E.
Slawinski, G.
Jachimowicz, J.
Derewonko, A.
Powiązania:: https://bibliotekanauki.pl/articles/245374.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: riveted joint
mushroom rivet
FEM local model
deformation fields
Opis:: The paper deals with the analysis of deformation of a rivet hole in a riveted joint after the manual dynamic riveting process. For many years, riveting remains a traditional and the most popular method ofjoining in aircraft structures. The residual stress and strain state appear at the rivet hole after the riveting process, which improves the joint's fatigue behaviour. The local finite element models are made with Patran. The rivet and sheets are described using eight-noded, three-dimensional brick elements. The riveting tools consist of four-noded, two-dimensional shell elements. Numerical FE simulations of the upsetting process are carried out using the Ls-Dyna code. The contact with friction is defined between the collaborating parts of the specimen. The results of simulations of the dynamic riveting process of a mushroom rivet with and without a compensator are compared in this paper. Hole deformation of the upper and lower sheet, squeezing force, as well as deformations of the rivet head are analysed. The influence of the compensator on strain and displacement states is studied. Simulation shows that some technological factors may have positive influence on the residual stress fields. Using the rivet with a compensator results in a better rivet hole filling capability. The rivet hole displacement in upper and lower sheets are at the same level. Paper also present manual dynamic riveting process of reverse and standard riveting procedure and model of riveted specimen.
Źródło:: Journal of KONES; 2009, 16, 4; 455-462
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Comparison of the dynamic riveting process of a rivet with and without a compensator
Autorzy:: Szymczyk, E.
Slawinski, G.
Jachimowicz, J.
Derewonko, A.
Powiązania:: https://bibliotekanauki.pl/articles/245575.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: riveted joint
mushroom rivet
FEM local model
deformation fields
Opis:: The paper deals with the analysis of deformation of a rivet hole in a riveted joint after the manual dynamic riveting process. For many years, riveting remains a traditional and the most popular method of joining in aircraft structures. The residual stress and strain state appear at the rivet hole after the riveting process, which improves the joint's fatigue behaviour. The local finite element models are made with Patron. The rivet and sheets are described using eight-noded, three-dimensional brick elements. The riveting tools consist of four-noded, two-dimensional shell elements. Numerical FE simulations of the upsetting process are carried out using the Ls-Dyna code. The contact with friction is defined between the collaborating parts of the specimen. The results of simulations of the dynamic riveting process of a mushroom rivet with and without a compensator are compared in this paper. Hole deformation of the upper and lower sheet, squeezing force, as well as deformations of the rivet head are analysed. The influence of the compensator on strain and displacement states is studied. Simulation shows that some technological factors may have positive influence on the residual stress fields. Using the rivet with a compensator results in a better rivet hole filling capability. The rivet hole displacement in upper and lower sheets are at the same level. Paper also present manual dynamic riveting process ofreverse and standard riveting procedure and model of riveted specimen.
Źródło:: Journal of KONES; 2009, 16, 3; 415-422
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analysis of residual stress fields in the riveted joint
Autorzy:: Szymczyk, E.
Jachimowicz, J.
Derewońko, A.
Powiązania:: https://bibliotekanauki.pl/articles/243089.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: riveted joint
FEM local model
non-destructive testing methods
Opis:: The riveted joints are critical areas of the aircraft structure. The residual stress and strain state appears at the rivet hole after the riveting process and improves fatigue behaviour of the joint. Numerical FE simulations of the upsetting process are carried out using the MARC code. Three-dimensional numerical models are used to determine the resulting stress and strain fields at the countersunk rivet and around the hole. The contact with friction is defined between the mating parts of the joint. Calculations are carried out in an elastic-plastic range. The influence of the rivet geometry, rivet stiffness and the sheet material model on strain and stress states is studied. Non-destructive testing methods like X-ray diffraction, liquid penetrant inspection and visual detection analysis with a UV lamp are used for validation of numerical results. Comparison between numerical and experimental results gives a satisfactory agreement. Numerical simulations allow investigating the influence of imperfections on the strength of the joint.
Źródło:: Journal of KONES; 2007, 14, 2; 465-473
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: MIMO intelligent-PID controller design for half car system based on model free control technique
Autorzy:: Djemal, Fathi
Haddar, Maroua
Baslamisli, S. Caglar
Chaari, Riadh
Chaari, Fakher
Haddar, Mohamed
Powiązania:: https://bibliotekanauki.pl/articles/1839614.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: Model Free Control
intelligent-PID controller
ultra-local model
on-line observer
Opis:: A novel decoupled Multi-Input-Multi-Output Model Free Control strategy is presented in this paper to improve the performance of an active suspension system implemented on a half car model. To damp vibrations generated by road excitation, an algebraic online compensator was integrated in the structure of a classical PID controller to avoid the impact of unpredictable disturbances. The key element of the proposed technique is a non-asymptotic observer that can avoid the use of statistical conventional techniques. Furthermore, the advantage of easy implementation is achieved where only two accelerometers are sufficient and adequate. A comparison with classical PID and LQR is provided to demonstrate the improvement made by the proposed scheme.
Źródło:: Journal of Theoretical and Applied Mechanics; 2020, 58, 4; 953-969
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Riveting process simulation - upsetting of the mushroom rivet
Autorzy:: Szymczyk, E.
Jachimowicz, J.
Sławiński, G.
Powiązania:: https://bibliotekanauki.pl/articles/244023.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: riveted joint
mushroom rivet
FEM local model
stress and strain fields
Źródło:: Journal of KONES; 2008, 15, 2; 493-502
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Fe analysis of strain localization in concrete in elasto-plasticity and damage mechanics with non-local softening
Autorzy:: Bobiński, J.
Powiązania:: https://bibliotekanauki.pl/articles/1933201.pdf
Data publikacji:: 2006
Wydawca:: Politechnika Gdańska
Tematy:: characteristic length
concrete
damage mechanics
elasto-plasticity
FEM
non-local model
strain localization
Opis:: Results of Finite Element Method (FEM) simulations of a strain localization in concrete specimens are presented. Two different continuum approaches have been used to model to behaviour of concrete: (i) an elasto-plastic constitutive law with the Drucker-Prager criterion in the compression regime and the Rankine criterion in the tensile regime, with isotropic hardening and softening and (ii) an isotropic continuum damage model with the equivalent strain corresponding to the Rankine failure criterion and modified Huber-Mises criterion in terms of strains, with exponential softening. Both constitutive models were enriched by non-local terms to describe strain localization properly, ensure mesh-independence in the softening regime and capture the deterministic size effect. The constitutive models were used to simulate strain localization in concrete in two boundary value problems under plane strain conditions, viz. uniaxial tension and three-point bending. The effect of the characteristic length on load-displacement curves and widths of strain localization is discussed.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 4; 353-375
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: A Non-local hypoplastic constitutive law to describe shear localisation in granular bodies
Autorzy:: Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/240962.pdf
Data publikacji:: 2003
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: characteristic length
finite element method
non-local model
plane strain compression
shear localization
Opis:: The paper presents a FE-analysis of shear localisation in granular bodies by a finite element method based on a hypoplastic constitutive law. The law can reproduce essential features of granular bodies depending on the void ratio, pressure level and deformation direction. To realistically simulate the formation of a spontaneous shear zone inside cohesionless sand during plane strain compression, a hypoplastic constitutive law was extended by non-local terms. The effects of initial void ratio, pressure level and a characteristic length on the thickness of an interior shear zone were shown. The numerical results were compared with corresponding laboratory tests.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2003, 50, 4; 359-379
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Forecasting Yield Curves in an Adaptive Framework
Autorzy:: Chen, Ying
Li, Bo
Powiązania:: https://bibliotekanauki.pl/articles/483285.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: interest rates
functional principal component analysis
local parametric model
Nelson-Siegel model
Opis:: Forecasting yield curves with regime switches is important in academia and financial industry. As the number of interest rate maturities increases, it poses difficulties in estimating parameters due to the curse of dimensionality. To deal with such a feature, factor models have been developed. However, the existing approaches are restrictive and largely based on the stationarity assumption of the factors. This inaccuracy creates non-ignorable financial risks, especially when the market is volatile. In this paper, a new methodology is proposed to adaptively forecast yield curves. Specifically, functional principal component analysis (FPCA) is used to extract factors capable of representing the features of yield curves. The local AR(1) model with time-dependent parameters is used to forecast each factor. Simulation and empirical studies reveal the superiority of this method over its natural competitor, the dynamic Nelson-Siegel (DNS) model. For the yield curves of the U.S. and China, the adaptive method provides more accurate 6- and 12-month ahead forecasts.
Źródło:: Central European Journal of Economic Modelling and Econometrics; 2011, 3, 4; 237-259
2080-0886
2080-119X
Pojawia się w:: Central European Journal of Economic Modelling and Econometrics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Odwzorowanie przepływu wód podziemnych systemu wodonośnego odcinka Kościan–Wolsztyn Pradoliny warszawsko-berlińskiej na modelach lokalnym i regionalnym
Reconstruction of groundwater flow in the water-bearing system of the Warsaw-Berlin Ice-Marginal Valley in the Kościan–Wolsztyn area based on local and regional models
Autorzy:: Dąbrowski, S.
Janiszewska, B.
Rynarzewski, W.
Straburzyńska-Janiszewska, R.
Powiązania:: https://bibliotekanauki.pl/articles/2061863.pdf
Data publikacji:: 2018
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: model lokalny
model regionalny
bilanse systemu wodonośnego
Pradolina Warszawsko-Berlińska
local model
regional model
balance of water-bearing system
Warsaw-Berlin Ice-Marginal Valley
Opis:: W badaniach hydrogeologicznych dolin rzecznych i pradolin do oceny zasobów wód podziemnych stosuje się badania modelowe, realizowane w układach lokalnych (odwzorowane do 1 : 25 000) lub regionalnych (skale poniżej 1 : 50 000). Zwykle stanowią one odrębne podsystemy wodonośne ściśle związane z wodami powierzchniowymi i ascenzją wgłębnych poziomów wodonośnych (Przybyłek, Dąbrowski, 2013) i wymagają szczegółowego odwzorowania na modelach systemów zasilania i drenażu (Dąbrowski i in., 2011). W artykule przedstawiono i porównano wyniki badań modelowych odcinka Kościan–Wolsztyn Pradoliny Warszawsko-Berlińskiej na dwóch modelach układu krążenia w celu oceny zasobów dyspozycyjnych – modelu dwuwarstwowym w skali 1 : 25 000 zrealizowanym w 2003 r. przy użyciu programu z biblioteki Hydrylib i modelu regionalnym zlewni Obry z analizowanym odcinkiem pradoliny w układzie czterech warstw modelowych, wykonanym w 2017 r. przy użyciu programu Groundwater Vistas.
Hydrogeological research of river and ice-marginal valleys, which are conducted for groundwater resources assessment, involve modelling of local (map scale below 1 : 25 000) or regional (map scale below 1 : 50 000) systems. Usually, these systems are discrete water-bearing subsystems related to surface waters and ascent recharge from deep aquifers (Przybyłek, Dąbrowski, 2013), which require detailed reconstruction of recharge and drainage systems (Dąbrowski et al., 2011). This paper presents and compares the results of modelling research of the Warsaw-Berlin Ice-Marginal Valley in the Kościan–Wolsztyn area conducted on two circulation system models to estimate disposable resources. These are the local, two- aquifer model of the study area, developed using Hydrylib software in 2003, and the regional, four-aquifer model of the Obra catchment for the study area, created using Groundwater Vistas software in 2017.
Źródło:: Biuletyn Państwowego Instytutu Geologicznego; 2018, 471, Hydrogeologia, z. 15; 15--22
0867-6143
Pojawia się w:: Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Analysis of friction interaction and optimisation of detail surface hardening technologies using non-local mathematical models
Autorzy:: Lyashenko, B. A.
Stotsko, Z. A.
Kuzin, O. A.
Kuzin, M. O.
Mechnik, V. A.
Powiązania:: https://bibliotekanauki.pl/articles/366788.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: friction
surface engineering
non-local mathematical model
optimisation
tarcie
inżynieria powierzchni
model matematyczny
optymalizacja
Opis:: Purpose: The aim of the work is to build physically sound engineering and design schemes that take into account the behaviour of polycrystalline metal systems under intense loads and allow optimization of surface treatment technologies to increase the operational reliability parameters of products. Design/methodology/approach: Using the approaches of thermodynamics, a methodological scheme is proposed, on the basis of which it is possible to optimize surface engineering technologies to increase the contact durability of details. Findings: It was found that the maximum increase in the durability of steel 40X13 (AISI 420) is achieved with thermocyclic ion nitriding in a cycle of ± 50°C, and the minimum with isothermal nitriding. Research limitations/implications: In this paper, the optimization of technological solutions to increase the contact durability of structural elements operating under prevailing power loads is given. Practical implications: Using the proposed mathematical relationships, optimal technological regimes of ion-plasma nitriding were established for various operating conditions, under which the maximum durability and wear resistance of 40X13 (AISI 420) steel are ensured. Originality/value: The paper proposes an approach to the formation of functionally gradient surface layers of steel with specified operational parameters when choosing optimal nitriding technology modes based on nonlocal mathematical models.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2020, 100, 1; 20-25
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Bayesowska estymacja modelu lokalnego poziomu o rozkładach dopuszczających warunkowy rozkład t-studenta i zmienną wariancję
Bayesian Estimation of Local Level Model with Student-t Disturbances and Time-Varying Conditional Variance
Autorzy:: Kwiatkowski, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/1827277.pdf
Data publikacji:: 2010-09-30
Wydawca:: Główny Urząd Statystyczny
Tematy:: Model lokalnego poziomu
bayesowskie testowanie modeli
warunkowa heteroskedastyczność
Local level model
Bayesian Model Comparison
Conditional Heteroscedasticity
Opis:: W artykule omówiono postać i własności modelu lokalnego poziomu, w którym zakłócenia losowe, w równaniu stanu i obserwacji, podlegają procesowi zmienności stochastycznej (SV) lub GARCH(1,1). Zasadniczym celem było opracowanie metod numerycznych wykorzystywanych w schemacie wnioskowania bayesowskiego w kontekście rozważanych modeli. Przykład empiryczny, zawarty w artykule, dotyczył wybranej spółki notowanej na GPW w Warszawie. Uzyskane wyniki wskazują, że najbardziej prawdopodobny okazał się model LL-SV, który uzyskał znaczną przewagę na standardowym modelem stochastycznej zmienności.
The paper presents the general LL (Local Level) model with time-varying conditional variance, recently proposed by Stock and Watson. The main purpose is to present the Bayesian estimation and model comparison of different local level models with Normal GARCH, Student-t GARCH and SV disturbances. We are particularly interested how the different specifications of the conditional variance affect the explanatory power of a set of competing models. We apply the LL models to logarithmic transformations of the original prices of Żywiec, Polish company listed on the WSE. The model selection and posterior estimates provide strong evidence in favor of a model with SV disturbances in the core component, and the transitory component.
Źródło:: Przegląd Statystyczny; 2010, 57, 2-3; 16-35
0033-2372
Pojawia się w:: Przegląd Statystyczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: The use of computational contact mechanics approaches to assess the performance of parts bearing stress concentrators
Autorzy:: Lyashenko, B. A.
Stotsko, Z. A.
Kuzin, O. A.
Kuzin, M. O.
Powiązania:: https://bibliotekanauki.pl/articles/1818816.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: power loads
non-local mathematical model
stress concentrator
optimization
obciążenia mocy
model matematyczny
koncentrator naprężeń
optymalizacja
Opis:: Purpose: The purpose of this work is to build new computational schemes for assessing the strength parameters of parts with inhomogeneous properties of surface layers in the presence of stress concentrators. Design/methodology/approach: Using the developed approaches of mathematical modeling and open software for calculating the structures of the FEM - FEniCS, the required thickness of the hardened zones of parts has been established, which ensures their minimum softening during operation, depending on the characteristics of the stress concentrator. Findings: It is shown that for each size of the surface stress concentrator there is a critical value of the hardening thickness, the excess of which does not affect the operational strength of the parts, but increases the cost of technological operations. Research limitations/implications: In this article proposes a method for calculating the influence of the dimensional characteristics of hardening zones on the contact strength of parts with stress concentrators under conditions of prevailing power loads. Practical implications: The results obtained in this work were used to determine the technological modes of plasma hardening, which ensure an increase in the contact strength of parts with stress concentrators, depending on their dimensional characteristics. Originality/value: Using the approaches of computational mechanics and mathematical and computer modeling, methods for controlling the contact strength of parts with inhomogeneous non-local properties in the presence of a surface stress concentrator are proposed for the first time.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2020, 103, 1; 25--32
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Local indebtedness in Hungary: Experience of 20 years
Autorzy:: Kovács, Gábor
Stion, Zsuzsa
Powiązania:: https://bibliotekanauki.pl/articles/639834.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: indebtedness, local governments, municipal bond, econometrics model, Hungary
Opis:: Hungary has a unitary government system with 19 counties, 23 “cities with county rank” and about 3200 local (municipal) governments. The financial architectureof local governments is quite complicated and budget constraints are “halfway” between soft and hard. After an early and temporary “municipal bond boom” in the middle of 1990’s, the size of indebtedness started to increase considerably, first in 2002. By the end of 2011 the size of financial obligations deriving from local borrowing amounted more than 4.7% of GDP.The paper is aimed at examining factors that might have been behind indebtedness and tries to separate the effect of internal and external variables for the period between 1990 and 2011. According to the results of the empirical analysis local authorities’ borrowing activity cannot be explained only with help of quantitative macro-economical indicators such as total sub-national revenues, expenditures, CPI and GDP.Namely, the formation of debt was mainly determined by behaviour patterns of local governments and byrandom (unforeseeable) shocks caused by changes in central regulation. The short term patterns in borrowing attitude are due to the four-year long election cycle of local representatives while adapting to random shock happens quickly within one year. Four different time-phases (periods) can be determined, which can be described by different characteristics and makes explanation for the formation of local debt: Early development of subnational debt markets (1990-1995); restriction (1996-1997); moderate growth (1998-2006); municipal bond-boom (2007-2010).
Źródło:: Zarządzanie Publiczne; 2013, 4(24)
2084-3968
Pojawia się w:: Zarządzanie Publiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Ananysis of a predator-prey model with disease in the predator species
Autorzy:: Radziński, Piotr
Foryś, Urszula
Powiązania:: https://bibliotekanauki.pl/articles/747413.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: predator-prey model, eco-epidemiology, local and global stability
Opis:: In the paper we analyse a diffusive predator-prey model with disease in predator species proposed by Qiao et al. (2014). In the original article there appears a mistake in the procedure of the model undimensionalisation. We make a correction in this procedure and show that some changes in the model analysis are necessary to obtain results similar to those presented by Qiao et al.We propose corrected conditions for global stability of one of existing equilibria -- disease free steady state and endemic state in the case without diffiusion as well as in the model with diffusion. On the basis of the corrected analysis we present new stability results.
Źródło:: Mathematica Applicanda; 2018, 46, 1
1730-2668
2299-4009
Pojawia się w:: Mathematica Applicanda
Dostawca treści:: Biblioteka Nauki

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