Skocz do pozycji: 1.

Tytuł:

Oscillatory and nonoscillatory solutions of neutral differential equations

Autorzy:

Tanaka, Satoshi

Powiązania:

https://bibliotekanauki.pl/articles/1208025.pdf

Data publikacji:

2000

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

nonoscillatory solution
neutral differential equation
oscillatory solution

Opis:

Neutral differential equations are studied. Sufficient conditions are obtained to have oscillatory solutions or nonoscillatory solutions. For the existence of solutions, the Schauder-Tikhonov fixed point theorem is used.

Źródło:

Annales Polonici Mathematici; 2000, 73, 2; 169-184
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

The median solution of the newsvendor problem and some observations

Autorzy:

Sinha, P.

Powiązania:

https://bibliotekanauki.pl/articles/952856.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

newsvendor problem
median solution
practical suitability
solution

Opis:

We consider the median solution of the Newsvendor Problem. Some properties of such a solution are shown through a theoretical analysis and a numerical experiment. Sometimes, though not often, median solution may be better than solutions maximizing expected profit, or maximizing minimum possible, over distribution with the same average and standard deviation, expected profit, according to some criteria. We discuss the practical suitability of the objective function set and the solution derived, for the Newsvendor Problem, and other such random optimization problems.

Źródło:

Management and Production Engineering Review; 2015, 6, 3; 55-60
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Asymptotic behavior of solutions of discrete Volterra equations

Autorzy:

Migda, J
Migda, M.

Powiązania:

https://bibliotekanauki.pl/articles/254889.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Volterra difference equation
prescribed asymptotic behaviour
asymptotically polynomial solution
asymptotically periodic solution
bounded solution

Opis:

We consider the nonlinear discrete Volterra equations of non-convolution type [formula] We present sufficient conditions for the existence of solutions with prescribed asymptotic behavior, especially asymptotically polynomial and asymptotically periodic solutions. We use o(ns), for a given nonpositive real s, as a measure of approximation. We also give conditions under which all solutions are asymptotically polynomial.

Źródło:

Opuscula Mathematica; 2016, 36, 2; 265-278
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances

Autorzy:

Gadomska, K
Zakrzewska, K.

Powiązania:

https://bibliotekanauki.pl/articles/839605.pdf

Data publikacji:

1997

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival

Opis:

The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.

Źródło:

Annals of Parasitology; 1997, 43, 1
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
PRZEŻYWALNOŚĆ LARW NIPPOSTRONGYLUS BRASILIENSIS (NEMATODA) W ROZTWORACH SUBSTANCJI TOKSYCZNYCH

Autorzy:

Gadomska, K.
Zakrzewska, K.

Powiązania:

https://bibliotekanauki.pl/articles/2148897.pdf

Data publikacji:

1997

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival

Opis:

The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.

Źródło:

Wiadomości Parazytologiczne; 1997, 43, 1; 79-88
0043-5163

Pojawia się w:

Wiadomości Parazytologiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Oscillatory properties of fourth order nonlinear difference equations with quasidifferences

Autorzy:

Schmeidel, E.
Migda, M.
Musielak, A.

Powiązania:

https://bibliotekanauki.pl/articles/255808.pdf

Data publikacji:

2006

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

nonlinear difference equation
oscillatory solution
nonoscillatory solution
fourth order

Opis:

In this paper we present the oscillation criterion for a class of fourth order nonlinear difference equations with quasidifferences.

Źródło:

Opuscula Mathematica; 2006, 26, 2; 371-380
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

On a new solution concept for bargaining problems

Autorzy:

Radzik, Tadeusz

Powiązania:

https://bibliotekanauki.pl/articles/1338962.pdf

Data publikacji:

1998

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

twisting
bargaining solution
bargaining problem
average pay-off solution

Opis:

The purpose of this paper is to discuss the properties of a new solution of the 2-person bargaining problem as formulated by Nash, the so-called Average Pay-off solution. This solution of a very simple form has a natural interpretation based on the center of gravity of the feasible set, and it is "more sensitive" to changes of feasible sets than any other standard bargaining solution. It satisfies the standard axioms: Pareto-Optimality, Symmetry, Scale Invariance, Continuity and Twisting. Moreover, it satisfies a new desirable axiom, Equal Area Twisting. It is surprising that no standard solution of bargaining problems has this property. The solution considered can be generalized in a very natural and unique way to n-person bargaining problems.

Źródło:

Applicationes Mathematicae; 1998-1999, 25, 3; 285-294
1233-7234

Pojawia się w:

Applicationes Mathematicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

An attribute based similarity function for VRP decision support

Autorzy:

Lokketangen, A.
Oppen, J.
Oyola, J.
Woodruff, D. L.

Powiązania:

https://bibliotekanauki.pl/articles/375919.pdf

Data publikacji:

2012

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

solution variety
solution similarity
vehicle routing problem
VRP
DSS

Opis:

When solving problems in the real world using optimization tools, the model solved by the tools is often only an approximation of the underlying, real, problem. In these circumstances, a decision maker (DM) should consider a diverse set of good solutions, not just an optimal solution as produced using the model. On the other hand, the same DM will only be interested in seeing a few of the alternative solutions, and not the plethora of solutions often produced by modern search techniques. There is thus a need to distinguish between good solutions using the attributes of solutions. We develop a distance function of the type proposed in the Psychology literature by Tversky (1977) for the class of VRP problems. We base our difference on the underlying structure of solutions. A DM is often interested in focusing on a set of solutions fulfilling certain conditions that are of specific importance that day, or in general, like avoiding a certain road due to construction that day. This distance measure can also be used to generate solutions containing these specific classes of attributes, as the normal search process might not supply enough of these interesting solutions. We illustrate the use of the functions in a Multiobjective Decision Support System (DSS) setting, where the DM might want to see the presence (or absence) of certain attributes, and show the importance of identifying solutions not on the Pareto front. Our distance measure can use any attributes of the solutions, not just those defined in the optimization model.

Źródło:

Decision Making in Manufacturing and Services; 2012, 6, 1-2; 65-83
1896-8325
2300-7087

Pojawia się w:

Decision Making in Manufacturing and Services

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Oscillations of equations caused by several deviating arguments

Autorzy:

Chatzarakis, George E.

Powiązania:

https://bibliotekanauki.pl/articles/952820.pdf

Data publikacji:

2019

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

differential equation
non-monotone argument
oscillatory solution
nonoscillatory solution

Opis:

Linear delay or advanced differential equations with variable coefficients and several not necessarily monotone arguments are considered, and some new oscillation criteria are given. More precisely, sufficient conditions, involving limsup and liminf, are obtained, which essentially improve several known criteria existing in the literature. Examples illustrating the results are also given, numerically solved in MATLAB.

Źródło:

Opuscula Mathematica; 2019, 39, 3; 321-353
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

On the uniqueness of viscosity solutions for first order partial differential-functional equations

Autorzy:

Topolski, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/1311751.pdf

Data publikacji:

1994

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

uniqueness
viscosity solution
differential-functional equation
almost everywhere solution

Opis:

We consider viscosity solutions for first order differential-functional equations. Uniqueness theorems for initial, mixed, and boundary value problems are presented. Our theorems include some results for generalized ("almost everywhere") solutions.

Źródło:

Annales Polonici Mathematici; 1994, 59, 1; 65-75
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 11.

Tytuł:

Improved iterative oscillation tests for first-order deviating differential equations

Autorzy:

Chatzarakis, G. E,
Jadlovska, I.

Powiązania:

https://bibliotekanauki.pl/articles/255719.pdf

Data publikacji:

2018

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

differential equation
non-monotone argument
oscillatory solution
nonoscillatory solution

Opis:

In this paper, improved oscillation conditions are established for the oscillation of all solutions of differential equations with non-monotone deviating arguments and nonnegative coefficients. They lead to a procedure that checks for oscillations by iteratively computing lim sup and lim inf on terms recursively defined on the equation's coefficients and deviating argument. This procedure significantly improves all known oscillation criteria. The results and the improvement achieved over the other known conditions are illustrated by two examples, numerically solved in MATLAB.

Źródło:

Opuscula Mathematica; 2018, 38, 3; 327-356
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Extremal solutions for nonlinear neumann problems

Autorzy:

Fiacca, Antonella
Servadei, Raffaella

Powiązania:

https://bibliotekanauki.pl/articles/729330.pdf

Data publikacji:

2001

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

upper solution
lower solution
order interval
truncation function
penalty function
pseudomonotone operator
coercive operator
extremal solution

Opis:

In this paper, we study a nonlinear Neumann problem. Assuming the existence of an upper and a lower solution, we prove the existence of a least and a greatest solution between them. Our approach uses the theory of operators of monotone type together with truncation and penalization techniques.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2001, 21, 2; 191-206
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 13.

Tytuł:

Comparison of properties of solutions of differential equations and recurrence equations with the same characteristic equation (on example of third order linear equations with constant coefficients)

Autorzy:

Mikołajski, J.
Schmeidel, E.

Powiązania:

https://bibliotekanauki.pl/articles/255810.pdf

Data publikacji:

2006

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

differential equation
recurrence
linear
third order
oscillatory solution
bounded solution

Opis:

Third order linear homogeneous differential and recurrence equations with constant coefficients are considered. We take the both equations with the same characteristic equation. We show that these equations (differential and recurrence) can have solutions with different properties concerning oscillation and boundedness. Especially the numbers of suitable types of solutions taken out from fundamental sets are presented. We give conditions under which the asymptotic properties considered are the same for the both equations.

Źródło:

Opuscula Mathematica; 2006, 26, 2; 343-349
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 14.

Tytuł:

Semilinear evolution equations of the parabolic type

Autorzy:

Bochenek, Jan

Powiązania:

https://bibliotekanauki.pl/articles/1293838.pdf

Data publikacji:

1999

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

classical solution
semilinear initial value problem
analytic semigroup
mild solution

Opis:

This paper is devoted to the investigation of the abstract semilinear initial value problem du/dt + A(t)u = f(t,u), u(0) = u₀, in the "parabolic" case.

Źródło:

Annales Polonici Mathematici; 1999, 72, 3; 197-206
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Novel functional polymers for recovery of silver

Autorzy:

Pilśniak-Rabiega, Magdalena
Wolska, Joanna

Powiązania:

https://bibliotekanauki.pl/articles/2146866.pdf

Data publikacji:

2021

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

synthesis
silver(I)
sorption
selectivity
synthetic chloride solution
real chloride solution

Opis:

In this study, the functional polymers containing heterocyclic ligands were synthesized by microwave modification of a crosslinked poly(vinylbenzyl chloride–divinylbenzene) matrix with 4-tertbutylpyridine, pyrrolidine, and 3-morpholinopropylamine. The sorbents were used to recover Ag(I) from the synthetic and real chloride solutions (4.00 mol/dm3 of NaCl, 0.100 mol/dm3 of HCl). The best Ag(I) sorption was achieved from synthetic and real chloride solutions in the case of pyrrolidine resin (16.2 and 16.7 mg/g, respectively). The sorption kinetic data were well fitted to the pseudo-first-order kinetic model. The degree of silver desorption was approximately 90% using a 1.0% potassium cyanide solution in a 0.50% hydrogen peroxide solution. All resins showed good selectivity for Ag(I) compared to Cu(II), Pb(II), Co(II), Ni(II), and Zn(II) in real chloride solution. On the basis of this study, it can be concluded that the obtained sorbents can be used to recover Ag from various sources such as ores, wastewater, and jewelry scraps.

Źródło:

Physicochemical Problems of Mineral Processing; 2021, 57, 6; 36--54
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 16.

Tytuł:

Some notes on one oscillatory condition of neutral differential equations

Autorzy:

Mihalíková, Božena
Chomová, Eva

Powiązania:

https://bibliotekanauki.pl/articles/729600.pdf

Data publikacji:

2006

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

neutral equation
oscillatory solution

Opis:

The aim of this paper is to present sufficient conditions for all bounded solutions of the second order neutral differential equations of the form
(r(t)(x(t) - px(t-τ))')' - q(t)f(x(σ(t))) = 0
to be oscillatory and to compare some existing results.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2006, 26, 1; 103-112
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 17.

Tytuł:

Convergence of formal solutions of first order singular nonlinear partial differential equations in the complex domain

Autorzy:

Miyake, Masatake
Shirai, Akira

Powiązania:

https://bibliotekanauki.pl/articles/1207974.pdf

Data publikacji:

2000

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

singular equation
formal solution

Opis:

We study the convergence or divergence of formal (power series) solutions of first order nonlinear partial differential equations
   (SE) f(x,u,D_x u) = 0 with u(0)=0.
Here the function f(x,u,ξ) is defined and holomorphic in a neighbourhood of a point $(0,0,ξ^{0}) ∈ ℂ^{n}_{x} × ℂ_{u} × ℂ^{n}_{ξ} (ξ^{0} = D_{x}u(0))$ and $f(0,0,ξ^{0}) = 0$. The equation (SE) is said to be singular if f(0,0,ξ) ≡ 0 $(ξ ∈ ℂ^{n})$. The criterion of convergence of a formal solution $u(x) = ∑_{|α| ≥ 1} u_{α}x^{α}$ of (SE) is given by a generalized form of the Poincaré condition which depends on each formal solution. In the case where the formal solution diverges a precise rate of divergence or the formal Gevrey order is specified which can be interpreted in terms of the Newton polygon as in the case of linear equations but for nonlinear equations it depends on the individual formal solution.

Źródło:

Annales Polonici Mathematici; 2000, 74, 1; 215-228
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Non-parallel plane Rayleigh Benard convection in cylindrical geometry

Autorzy:

Golbabai, A.

Powiązania:

https://bibliotekanauki.pl/articles/1340378.pdf

Data publikacji:

1995

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

inner solution
perturbed wall

Opis:

This paper considers the effect of a perturbed wall in regard to the classical Benard convection problem in which the lower rigid surface is of the form $z=ε^2 g(s)$, s=ε r, in axisymmetric cylindrical polar coordinates (r,ϕ,z). The boundary conditions at s=0 for the linear amplitude equation are found and it is shown that these conditions are different from those which apply to the nonlinear problem investigated by Brown and Stewartson [1], representing the distribution of convection cells near the center.

Źródło:

Applicationes Mathematicae; 1995-1996, 23, 1; 25-36
1233-7234

Pojawia się w:

Applicationes Mathematicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Sobolev norm estimates of solutions for the sublinear Emden-Fowler equation

Autorzy:

Kajikiya, R.

Powiązania:

https://bibliotekanauki.pl/articles/255967.pdf

Data publikacji:

2013

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Emden-Fowler equation
sign-changing solution
positive solution
variational method
norm estimate

Opis:

We study the sublinear Emden-Fowler equation in small domains. As the domain becomes smaller, so does any solution. We investigate the convergence rate of the Sobolev norm of solutions as the volume of the domain converges to zero. The result is obtained by estimating the first eigenvalue of the Laplacian with the help of the variational method.

Źródło:

Opuscula Mathematica; 2013, 33, 4; 713-723
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Representation of the set of mild solutions to the relaxed semilinear differential inclusion

Autorzy:

Benedetti, Irene
Panasenko, Elena

Powiązania:

https://bibliotekanauki.pl/articles/729445.pdf

Data publikacji:

2006

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

differential inclusion
mild solution
quasi-solution
convexified and perturbed problem
relaxation theorem

Opis:

We study the relation between the solutions set to a perturbed semilinear differential inclusion with nonconvex and non-Lipschitz right-hand side in a Banach space and the solutions set to the relaxed problem corresponding to the original one. We find the conditions under which the set of solutions for the relaxed problem coincides with the intersection of closures (in the space of continuous functions) of sets of δ-solutions to the original problem.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2006, 26, 1; 143-158
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Rozpuszczalność granatu itrowo – glinowego w topniku PbO/B₂O₃
Solubility of yttrium - aluminum garnet in PbO/B2O3 flux

Autorzy:

Sarnecki, J.

Powiązania:

https://bibliotekanauki.pl/articles/192186.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Technologii Materiałów Elektronicznych

Tematy:

LPE
YAG
roztwór wysokotemperaturowy
entalpia rozpuszczania
high-temperature solution
enthalpy of solution

Opis:

Praca dotyczy analizy rozpuszczalności kryształów Y3Al5O12 (YAG) w stopionej mieszaninie PbO-B2O3. Analizę przeprowadzono wykorzystując przedstawiony przez van Erk'a model, w którym założono, że rozpuszczona faza granatu tworzy z rozpuszczalnikiem PbO-B2O3 ciecz jonową. Określono zależności między iloczynem rozpuszczalności YAG bez domieszek oraz domieszkowanego jonami ziem rzadkich i galu a temperaturą nasycenia roztworu wysokotemperaturowego, z którego zachodziła epitaksja warstw YAG. Z wyznaczonych doświadczalnie zależności określono wartość entalpii rozpuszczania kryształów YAG.
This work is devoted to the analysis of the solubility of Y3Al5O12 crystals in a molten mixture of PbO-B2O3. The analysis was performed using the model proposed by Van Erk, which assumed that the dissolved garnet phase formed an ionic fluid with PbO-B2O3. The relation between the solubility product of YAG substituted by rare earth or gallium ions and non-substituted YAG and the saturation temperature of a high-temperature solution suitable for the epitaxial growth of YAG layers was determined. The value of the solution enthalpy of the YAG phase was estimated from this empirical relation.

Źródło:

Materiały Elektroniczne; 2013, T. 41, nr 1, 1; 33-46
0209-0058

Pojawia się w:

Materiały Elektroniczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

On the Non-Symmetric Nash and Kalai–Smorodinsky Bargaining Solutions

Autorzy:

Gerchak, Y.

Powiązania:

https://bibliotekanauki.pl/articles/375971.pdf

Data publikacji:

2015

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Nash bargaining solution
Non-Symmetric
Kalai–Smorodinsky Bargaining Solution
supply chain coordination

Opis:

Recently, in some negotiation application areas, the usual assumption that negotiators are symmetric has been relaxed. In particular, weights have been introduced to the Nash Bargaining Solution to reflect the different powers of the players. Yet, we feel that operating with non-symmetric bargaining solutions and their implications is not well understood. We analyze the properties and optimization of the non-symmetric Nash Bargaining Solution and of a non-symmetric Kalai–Smorodinsky Bargaining Solution. We provide extensive comparative statics, then comment on the implications of the concepts in supply chain coordination contexts.

Źródło:

Decision Making in Manufacturing and Services; 2015, 9, 1; 55-61
1896-8325
2300-7087

Pojawia się w:

Decision Making in Manufacturing and Services

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

A general study of fundamental solutions in aniotropicthermoelastic media with mass diffusion and voids

Autorzy:

Chawla, Vijay
Kamboj, Deepmala

Powiązania:

https://bibliotekanauki.pl/articles/1839675.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

termosprężystość
dyfuzja masy
źródło ciepła
general solution
fundamental solution
thermoelastic
voids
mass diffusion

Opis:

The present paper deals with the study of a fundamental solution in transversely isotropic thermoelastic media with mass diffusion and voids. For this purpose, a two-dimensional general solution in transversely isotropic thermoelastic media with mass diffusion and voids is derived first. On the basis of the obtained general solution, the fundamental solution for a steady point heat source on the surface of a semi-infinite transversely isotropic thermoelastic material with mass diffusion and voids is derived by nine newly introduced harmonic functions. The components of displacement, stress, temperature distribution, mass concentration and voids are expressed in terms of elementary functions and are convenient to use. From the present investigation, some special cases of interest are also deduced and compared with the previous results obtained, which prove the correctness of the present result.

Źródło:

International Journal of Applied Mechanics and Engineering; 2020, 25, 4; 22-41
1734-4492
2353-9003

Pojawia się w:

International Journal of Applied Mechanics and Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

On a linear functional equation with a mean-type mapping having no fixed points

Autorzy:

Sajbura, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/729646.pdf

Data publikacji:

2005

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

linear functional equation
iteration
mean
continuous solution
solution depending on an arbitrary function

Opis:

Our aim is to study continuous solutions φ of the classical linear iterative equation
φ(f(x,y)) = g(x,y)φ(x,y) + h(x,y),
where the given function f is defined as a pair of means. We are interested in the case when f has no fixed points. In turns out that in such a case continuous solutions of (1) depend on an arbitrary function.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2005, 25, 1; 27-46
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Analytic solutions of a second-order functional differential equation with a state derivative dependent delay

Autorzy:

Si, Jian-Guo
Wang, Xin-Ping

Powiązania:

https://bibliotekanauki.pl/articles/965956.pdf

Data publikacji:

1999

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

analytic solution
functional differential equation

Opis:

This paper is concerned with a second-order functional differential equation of the form $x''(z)=x(az+bx'(z))$ with the distinctive feature that the argument of the unknown function depends on the state derivative. An existence theorem is established for analytic solutions and systematic methods for deriving explicit solutions are also given.

Źródło:

Colloquium Mathematicum; 1999, 79, 2; 273-281
0010-1354

Pojawia się w:

Colloquium Mathematicum

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 26.

Tytuł:

Parabolic differential-functional inequalities in viscosity sense

Autorzy:

Topolski, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/1294509.pdf

Data publikacji:

1998

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

viscosity solution
differential-functional equation

Opis:

We consider viscosity solutions for second order differential-functional equations of parabolic type. Initial value and mixed problems are studied. Comparison theorems for subsolutions, supersolutions and solutions are considered.

Źródło:

Annales Polonici Mathematici; 1998, 68, 1; 17-25
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Methodological Solutions in Studies on Transgender. Exploring the Terrain

Autorzy:

Ratkowska-Pasikowska, Justyna
Okólska, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/36787531.pdf

Data publikacji:

2022-05-09

Wydawca:

Wydawnictwo Naukowe Chrześcijańskiej Akademii Teologicznej w Warszawie

Tematy:

methodological solution
transgender
data collection

Opis:

The article provides an overview of the solutions used in the methodology of research on transgender. This was done based on a compilation of major foreign research on transgender and an analysis of the content of the EBSCO website. As a result, some changes have been observed over time. They concerned the scope of the amount of research related to the issue of transgender over time, preferences of data collection methods, research patterns and technologically advanced solutions. Possible factors determining the result of the review were discussed. The authors indicated the significance of the developing methodological tendencies in studies on transgenderism during several decades on education and, as a result, on general social awareness.

Źródło:

Studia z Teorii Wychowania; 2022, XIII(1(38)); 97-109
2083-0998
2719-4078

Pojawia się w:

Studia z Teorii Wychowania

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Numerical verification of analytical solution for autofrettaged high-pressure vessels

Autorzy:

Trojnacki, A.
Krasiński, M.

Powiązania:

https://bibliotekanauki.pl/articles/280532.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

autofrettage
optimal solution
finite element

Opis:

Thick-walled cylinders are widely used in various engineering applications. In an optimal design of pressurized thick-walled cylinders, an increase in the allowable internal pressure can be achieved by an autofrettage process. In the paper, analysis is carried out to develop a procedure in which the autofrettage pressure is determined analytically. The obtained equivalent stress distribution is compared with those of the conventional solid wall and of several multi-layer vessels. The results of the analytical approach are verified by FEM modelling. Tensile tests have been carried out to determine the real mechanical properties of the material of the vessel and to create a material model. The presented example illustrates the advantages of the autofrettage technique.

Źródło:

Journal of Theoretical and Applied Mechanics; 2014, 52, 3; 731-744
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

On continuous solutions of a functional equation

Autorzy:

Dankiewicz, Kazimierz

Powiązania:

https://bibliotekanauki.pl/articles/1310786.pdf

Data publikacji:

1997

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

continuous solution
functional equation
extension

Opis:

This paper discusses continuous solutions of the functional equation φ[f(x)] = g(x,φ(x)) in topological spaces.

Źródło:

Annales Polonici Mathematici; 1996-1997, 65, 2; 151-156
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

On the existence of positive periodic solutions for totally nonlinear neutral differential equations of the second-order with functional delay

Autorzy:

Essel, E. K.
Yankson, E.

Powiązania:

https://bibliotekanauki.pl/articles/255715.pdf

Data publikacji:

2014

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Krasnoselskii
neutral
positive periodic solution

Opis:

We prove that the totally nonlinear second-order neutral differential equation [formula] has positive periodic solutions by employing the Krasnoselskii-Burton hybrid fixed point theorem.

Źródło:

Opuscula Mathematica; 2014, 34, 3; 469-481
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Optimal control problems with upper semicontinuous Hamiltonians

Autorzy:

Misztela, Arkadiusz

Powiązania:

https://bibliotekanauki.pl/articles/729281.pdf

Data publikacji:

2010

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

Hamilton-Jacobi-Bellman equation
Bolza problem
viscosity solution
bilateral solution
monotonic approximation
semicontinuous Hamiltonian

Opis:

In this paper we give examples of value functions in Bolza problem that are not bilateral or viscosity solutions and an example of a smooth value function that is even not a classic solution (in particular, it can be neither the viscosity nor the bilateral solution) of Hamilton-Jacobi-Bellman equation with upper semicontinuous Hamiltonian. Good properties of value functions motivate us to introduce approximate solutions of equations with such type Hamiltonians. We show that the value function is the unique approximate solution.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2010, 30, 1; 71-99
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Qualitative behavior of a class of second order nonlinear differential equations on the halfline

Autorzy:

Staněk, Svatoslav

Powiązania:

https://bibliotekanauki.pl/articles/1311894.pdf

Data publikacji:

1993

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

nonlinear differential equation
nonnegative solution
nonpositive solution
existence and uniqueness of solutions
bounded solution
dependence of solutions on a parameter
boundary value problem

Opis:

A differential equation of the form (q(t)k(u)u')' = F(t,u)u' is considered and solutions u with u(0) = 0 are studied on the halfline [0,∞). Theorems about the existence, uniqueness, boundedness and dependence of solutions on a parameter are given.

Źródło:

Annales Polonici Mathematici; 1993, 58, 1; 65-83
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 33.

Tytuł:

Effects of colloidal silver on vase life of cut chrysanthemum

Autorzy:

Byczyńska, Andżelika
Salachna, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/1182604.pdf

Data publikacji:

2017

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

SPAD
cut flower
postharvest
solution uptake

Opis:

In this study, the efficacy of colloidal silver in extending the vase life of cut chrysanthemum ‘Feeling Green’ inflorescences was evaluated. Three concentrations of colloidal silver were used: 0.01%, 0.02 % and 0.04%. Control inflorescences were kept in water. Colloidal silver treatments at all concentrations extended the vase life of cut chrysanthemum. The 0.02% colloidal silver treatment produced the longest vase life (25 days), while the control resulted in the shortest vase life (18 days). In addition, the less weight loss were observed in the inflorescences exposed to the solution of colloidal silver. The greatest solution uptake was observed in the variant with colloidal silver at 0.02%. Leaf greenness index was the highest in the chrysanthemums placed in 0.04% silver solution.

Źródło:

World Scientific News; 2017, 69; 239-243
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 34.

Tytuł:

The representation of smooth functions in terms of the fundamental solution of a linear parabolic equation

Autorzy:

Watson, Neil

Powiązania:

https://bibliotekanauki.pl/articles/1207895.pdf

Data publikacji:

2000

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

fundamental solution
parabolic equation
representation theorem

Opis:

Let L be a second order, linear, parabolic partial differential operator, with bounded Hölder continuous coefficients, defined on the closure of the strip $X = ℝ^{n} × ]0,a[$. We prove a representation theorem for an arbitrary $C^{2,1}$ function, in terms of the fundamental solution of the equation Lu=0. Such a theorem was proved in an earlier paper for a parabolic operator in divergence form with $C^{∞}$ coefficients, but here much weaker conditions suffice. Some consequences of the representation theorem, for the solutions of Lu=0, are also presented.

Źródło:

Annales Polonici Mathematici; 2000, 75, 3; 281-287
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 35.

Tytuł:

Singular fractional discrete-time linear systems

Autorzy:

Kaczorek, T.

Powiązania:

https://bibliotekanauki.pl/articles/206067.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

decomposition
singular
fractional
linear system
solution

Opis:

A new class of singular fractional linear discretetime systems is introduced. Using the Weierstrass regular pencil decomposition the solution to the state equation of singular fractional linear systems is derived. The considerations are illustrated by numerical examples.

Źródło:

Control and Cybernetics; 2011, 40, 3; 753-761
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 36.

Tytuł:

Analytical solution for certain nonlinear electromagnetic field problems

Autorzy:

Sowa, M.
Spałek, D.

Powiązania:

https://bibliotekanauki.pl/articles/377744.pdf

Data publikacji:

2012

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

electromagnetic field
analytical solution
nonlinear analysis

Opis:

The paper presents a nonlinear electromagnetic field problem with cylindrical symmetry. A time-sinusoidal boundary condition is applied, which yields non-sinusoidal steady-state fields. The problem is brought forth to test an analytical-numerical method based on the method of small parameter. A distinctive feature of this method is that it requires symbolic calculations to be performed. These allow to reduce the problem to a system of nonlinear equations. In order to check the accuracy of the solution, several error criteria are introduced. Moreover, the power balance of a nonlinear conductive region is verified.

Źródło:

Poznan University of Technology Academic Journals. Electrical Engineering; 2012, 69; 49-56
1897-0737

Pojawia się w:

Poznan University of Technology Academic Journals. Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 37.

Tytuł:

On the multisummability of WKB solutions of certain singularly perturbed linear ordinary differential equations

Autorzy:

Takei, Y.

Powiązania:

https://bibliotekanauki.pl/articles/255041.pdf

Data publikacji:

2015

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

exact WKB analysis
WKB solution
multisummability

Opis:

Using two concrete examples, we discuss the multisummability of WKB solutions of singularly perturbed linear ordinary differential equations. Integral representations of solutions and a criterion for the multisummability based on the Cauchy-Heine transform play an important role in the proof.

Źródło:

Opuscula Mathematica; 2015, 35, 5; 775-802
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 38.

Tytuł:

On an evolution inclusion in non-separable Banach spaces

Autorzy:

Cernea, A.

Powiązania:

https://bibliotekanauki.pl/articles/255172.pdf

Data publikacji:

2009

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Lusin measurable multifunctions
selection
mild solution

Opis:

We consider a Cauchy problem for a class of nonconvex evolution inclusions in non-separable Banach spaces under Filippov-type assumptions.We prove the existence of solutions.

Źródło:

Opuscula Mathematica; 2009, 29, 2; 131-138
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Poisson-Boltzmann equation in ℝ³

Autorzy:

Krzywicki, A.
Nadzieja, T.

Powiązania:

https://bibliotekanauki.pl/articles/1313321.pdf

Data publikacji:

1991

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

Poisson-Boltzmann equation
existence of solution

Opis:

The electric potential u in a solute of electrolyte satisfies the equation
Δu(x) = f(u(x)), x ∈ Ω ⊂ ℝ³, $u|_{∂Ω} = 0$.
One studies the existence of a solution of the problem and its properties.

Źródło:

Annales Polonici Mathematici; 1991, 54, 2; 125-134
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Challenges for the Ukrainian energy industry

Autorzy:

Krysyuk, Halina

Powiązania:

https://bibliotekanauki.pl/articles/576193.pdf

Data publikacji:

2014-06-30

Wydawca:

Akademia Sztuki Wojennej

Tematy:

energy sector
solution
Ukraine
economy
corruption

Opis:

Reform of the energy sector is very important, both for the Ukrainian economy and for the reputation of Ukraine in Europe. Since independence, the energy sector, and especially the gas sector, has been totally in transparency and a major area of corruption. Energy is the most important component of Ukraine’s economy and energy security is one of the weakest links in the state’s national security strategy.

Źródło:

Security and Defence Quarterly; 2014, 3, 2; 99-110
2300-8741
2544-994X

Pojawia się w:

Security and Defence Quarterly

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 41.

Tytuł:

Controllability on infinite time horizon for first and second order functional differential inclusions in Banach spaces

Autorzy:

Benchohra, Mouffak
Górniewicz, Lech
Ntouyas, Sotiris

Powiązania:

https://bibliotekanauki.pl/articles/729314.pdf

Data publikacji:

2001

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

controllability
mild solution
evolution
fixed point

Opis:

In this paper, we shall establish sufficient conditions for the controllability on semi-infinite intervals for first and second order functional differential inclusions in Banach spaces. We shall rely on a fixed point theorem due to Ma, which is an extension on locally convex topological spaces, of Schaefer's theorem. Moreover, by using the fixed point index arguments the implicit case is treated.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2001, 21, 2; 261-282
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Prevention and solution of homelessness in Slovakia

Autorzy:

Lachytová, Lenka
Lehotayová, Ivana

Powiązania:

https://bibliotekanauki.pl/articles/2166261.pdf

Data publikacji:

2022-12

Wydawca:

Państwowa Wyższa Szkoła Zawodowa w Chełmie

Tematy:

homelessness
intervention mechanisms
prevention
resocialization
solution

Opis:

The issue of homelessness is a phenomenon that´s very serious for a long time not only in Slovakia, but also in other countries of the world. Homelessness is considered as one of the most extreme consequences of poverty and social exclusion. The article emphasizes activities whose purpose is to help homeless people from physical, psychological, and social harm and enable them to return to society. The main aim of the article is to focus on methods of prevention by which it´s possible to eliminate the emergence of homelessness. This article is a partial output of the project VEGA 1/0595/21 – Public administration interventions at the time of COVID-19 and their impact on the quality of life of citizens of selected communities.

Źródło:

Scientific Bulletin of Chełm - Section of Pedagogy; 2022, 1; 165-176
2084-6770

Pojawia się w:

Scientific Bulletin of Chełm - Section of Pedagogy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Tips for optimizing organ preservation solutions

Autorzy:

Ostróżka-Cieślik, Aneta
Dolińska, Barbara
Ryszka, Florian

Powiązania:

https://bibliotekanauki.pl/articles/1038517.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

organ transplantation
preservation solution
hormones
micronutrients

Opis:

Organ injury during ischemia is one of the clinical problems of today's transplantation. It occurs during warm ischemia time (WIT) when the blood flow is cut off and during cold ischemia when a graft is chilled in situ until the circulation is restored to the recipient organism. Fast cooling of the organ slows down metabolism and activates intracellular enzymes, which minimizes the effects of warm ischemia. Unfortunately, hypothermia also results in inhibition of ATP synthesis, cell swelling and intracellular acidity. That is why research is continually being conducted to develop new fluids for rinsing and storing organs, as well as to optimize the composition of those that are already in use, which will allow for longer and more effective graft storage and restoration of their optimal functions after transplantation. This article provides current information on rinsing and storage fluids available on the global market. It also discusses tips for the fluid modifications with hormones and micronutrients.

Źródło:

Acta Biochimica Polonica; 2018, 65, 1; 9-15
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 44.

Tytuł:

Positive solutions to nonlinear singular second order boundary value problems

Autorzy:

Bonanno, Gabriele

Powiązania:

https://bibliotekanauki.pl/articles/1310938.pdf

Data publikacji:

1996

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

singular boundary value problem
positive solution

Opis:

Existence theorems of positive solutions to a class of singular second order boundary value problems of the form y'' + f(x,y,y') = 0, 0 < x < 1, are established. It is not required that the function (x,y,z) → f(x,y,z) be nonincreasing in y and/or z, as is generally assumed. However, when (x,y,z) → f(x,y,z) is nonincreasing in y and z, some of O'Regan's results [J. Differential Equations 84 (1990), 228-251] are improved. The proofs of the main theorems are based on a fixed point theorem for weakly sequentially continuous operators.

Źródło:

Annales Polonici Mathematici; 1996, 64, 3; 237-251
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

A topological version of the Ambrosetti-Prodi theorem

Autorzy:

Przeradzki, Bogdan

Powiązania:

https://bibliotekanauki.pl/articles/1311053.pdf

Data publikacji:

1996

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Tematy:

multiple solution
resonance
functional-differential equation

Opis:

The existence of at least two solutions for nonlinear equations close to semilinear equations at resonance is obtained by the degree theory methods. The same equations have no solutions if one slightly changes the right-hand side. The abstract result is applied to boundary value problems with specific nonlinearities.

Źródło:

Annales Polonici Mathematici; 1996, 64, 2; 121-130
0066-2216

Pojawia się w:

Annales Polonici Mathematici

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

The maximum principle for viscosity solutions of elliptic differential functional equations

Autorzy:

Karpowicz, A.

Powiązania:

https://bibliotekanauki.pl/articles/254694.pdf

Data publikacji:

2013

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

maximum principle
viscosity solution
elliptic equations

Opis:

This paper is devoted to the study of the maximum principle for the elliptic equation with a deviated argument. We will consider viscosity solutions of this equation.

Źródło:

Opuscula Mathematica; 2013, 33, 1; 99-105
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Oscillation of solutions to non-linear difference equations with several advanced arguments

Autorzy:

Pinelas, S.
Dix, J. G.

Powiązania:

https://bibliotekanauki.pl/articles/255605.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

advanced difference equation
non-oscillatory solution

Opis:

This work concerns the oscillation and asymptotic properties of solutions to the non-linear difference equation with advanced arguments [formula]. We establish sufficient conditions for the existence of positive, and negative solutions. Then we obtain conditions for solutions to be bounded, convergent to positive infinity and to negative infinity and to zero. Also we obtain conditions for all solutions to be oscillatory.

Źródło:

Opuscula Mathematica; 2017, 37, 6; 887-898
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Simulations of thermal processes in a restored tooth

Autorzy:

Siedlecki, J.
Ciesielski, M.

Powiązania:

https://bibliotekanauki.pl/articles/122467.pdf

Data publikacji:

2013

Wydawca:

Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej

Tematy:

restored tooth
thermal process
numerical solution

Opis:

In this paper the analysis of the temperature distribution in restored tooth is considered. The aim of the research is to evaluate the impact of temperature changes in the pulp layer of tooth under the influence of rapid temperature changes in the ambient fluid. The axially-symmetrical model of the molar tooth (in vitro) without filling and with fillings (amalgam and composite resin) is analyzed. The equations of mathematical model are solved numerically using the control volume method. Finally, some examples of simulations are presented.

Źródło:

Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 4; 103-108
2299-9965

Pojawia się w:

Journal of Applied Mathematics and Computational Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

An approximation of the analytical solution of the fractional Euler-Lagrange equation

Autorzy:

Ciesielski, M.
Błaszczyk, T.

Powiązania:

https://bibliotekanauki.pl/articles/122587.pdf

Data publikacji:

2013

Wydawca:

Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej

Tematy:

fractional Euler-Lagrange equation
numerical solution

Opis:

In this paper the fractional Euler-Lagrange equation of order α ∈ (0, 1] in the finite time interval is considered. This equation is transformed to the integral form by the use of the fractional integral operators. Next, the numerical approximation of the analytical solution is presented. Finally, some examples of numerical solutions are presented.

Źródło:

Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 4; 23-30
2299-9965

Pojawia się w:

Journal of Applied Mathematics and Computational Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

A note on kernels and solutions in digraphs

Autorzy:

Harminc, Matúš
Soták, Roman

Powiązania:

https://bibliotekanauki.pl/articles/744158.pdf

Data publikacji:

1999

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

kernel of digraph
solution of digraph

Opis:

For given nonnegative integers k,s an upper bound on the minimum number of vertices of a strongly connected digraph with exactly k kernels and s solutions is presented.

Źródło:

Discussiones Mathematicae Graph Theory; 1999, 19, 2; 237-240
2083-5892

Pojawia się w:

Discussiones Mathematicae Graph Theory

Dostawca treści:

Biblioteka Nauki

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Artykuł

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