Informacja

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

Wyszukujesz frazę "operator" wg kryterium: Temat


Tytuł:
Model of operator activity in computer systems image processing
Autorzy:
Kaminsky, R.
Borovets, Ya.
Powiązania:
https://bibliotekanauki.pl/articles/410660.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
human-operator
operator model
operator system
układ człowiek-maszyna
Opis:
The described Human-Operator model concerned with the design, evaluation and implementation of interactive computing systems for human use and with the study of major phenomena surrounding them. Analyzed state of using computer simulation and hardware you need to work with it.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 2; 9-14
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotic behaviour of the iterates of nonnegative operators on a Banach lattice
Autorzy:
Socała, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1294507.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
nonnegative operator
exponentially stationary operator
integral operator
lower function
Opis:
Asymptotic convergence theorems for nonnegative operators on Banach lattices, on $L^{∞}$, on C(X) and on $L^p(1 ≤ p < ∞)$ are proved. The general results are applied to a class of integral operators on L¹.
Źródło:
Annales Polonici Mathematici; 1998, 68, 1; 1-16
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On some application of algebraic quasinuclei to the determinant theory
Autorzy:
Ciecierska, G.
Powiązania:
https://bibliotekanauki.pl/articles/122968.pdf
Data publikacji:
2013
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
determinant system
Fredholm operator
quasinucleus
quasinuclear operator
operator Fredholma
Opis:
In the paper we apply the modified powers of algebraic quasinuclei to construction of determinant systems for quasinuclear perturbations of Fredholm operators. Given two pairs (Ξ, X), (Ω, Y) of conjugate linear spaces, an algebraic quasinucleus F ∈ an (Ω → Ξ, X → Y) and a determinant system for the Fredholm operator S ∈op(Ω →Ξ, X → Y), we obtain algebraic formulas for terms of a determinant system for S + TF.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 3; 27-38
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On inessential and improjective operators.
Autorzy:
Aiena, Pietro
González, Manuel
Powiązania:
https://bibliotekanauki.pl/articles/1217805.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
inessential operator
improjective operator
Fredholm theory
Opis:
We give several characterizations of the improjective operators, introduced by Tarafdar, and we characterize the inessential operators among the improjective operators. It is an interesting problem whether both classes of operators coincide in general. A positive answer would provide, for example, an intrinsic characterization of the inessential operators. We give several equivalent formulations of this problem and we show that the inessential operators acting between certain pairs of Banach spaces coincide with the improjective operators.
Źródło:
Studia Mathematica; 1998, 131, 3; 271-287
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new characterizationof convex $\Phi$-functions with a parameter
Autorzy:
Micherda, B.
Powiązania:
https://bibliotekanauki.pl/articles/1397502.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Orlicz-Musielak space
convex function
isotonic operator
projection operator
antiprojection operator
Opis:
We show that, under some additional assumptions, all projection operators onto latticially closed subsets of the Orlicz-Musielak space generated by $\Phi$ are isotonic if and only if $\Phi$ is convex with respect to its second variable. A dual result of this type is also proven for antiprojections. This gives the positive answer to the problem presented in Opuscula Mathematica in 2012.
Źródło:
Opuscula Mathematica; 2015, 35, 2; 191-197
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
μ -Hankel operators on Hilbert spaces
Autorzy:
Mirotin, Adolf
Kuzmenkova, Ekaterina
Powiązania:
https://bibliotekanauki.pl/articles/2048958.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Hankel operator
Hardy space
integral representation
nuclear operator
integral operator
Opis:
A class of operators is introduced (μ -Hankel operators, μ is a complex parameter), which generalizes the class of Hankel operators. Criteria for boundedness, compactness, nuclearity, and finite dimensionality are obtained for operators of this class, and for the case |μ| = 1 their description in the Hardy space is given. Integral representations of $\text{}^{-}$Hankel operators on the unit disk and on the Semi-Axis are also considered.
Źródło:
Opuscula Mathematica; 2021, 41, 6; 881-898
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Schramm spaces and composition operators
Autorzy:
Wróbel, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/24201507.pdf
Data publikacji:
2023
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
Schramm function
continuous function
Nemytskij composition operator
Schramm type variation
uniformly continuous operator
Lipschitz operator
funkcja Schramma
funkcja ciągła
operator kompozycji Niemyckiego
operator jednostajnie ciągły
operator Lipschitza
Opis:
We give some properties of Schramm functions; among others, we prove that the family of all continuous piecewise linear functions defined on a real interval I is contained in the space ΦBV (I) of functions of bounded variation in the sense of Schramm. Moreover, we show that the generating function of the corresponding Nemytskij composition operator acting between Banach spaces CΦBV (I) of continuous functions of bounded Schramm variation has to be continuous and additionally we show that a space CΦBV (I) has the Matkowski property.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2023, 22, 2; 87--98
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Categorical Abstract Algebraic Logic: Referential π-Institutions
Autorzy:
Voutsadakis, George
Powiązania:
https://bibliotekanauki.pl/articles/749990.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Referential Logics
Selfextensional Logics
Leibniz operator
Tarski operator
Suszko operator
π-institutions
Opis:
Wójcicki introduced in the late 1970s the concept of a referential semantics for propositional logics. Referential semantics incorporate features of the Kripke possible world semantics for modal logics into the realm of algebraic and matrix semantics of arbitrary sentential logics. A well-known theorem of Wójcicki asserts that a logic has a referential semantics if and only if it is selfextensional. Referential semantics was subsequently studied in detail by Malinowski and the concept of selfextensionality has played, more recently, an important role in the field of abstract algebraic logic in connection with the operator approach to algebraizability. We introduce and review some of the basic definitions and results pertaining to the referential semantics of π-institutions, abstracting corresponding results from the realm of propositional logics.
Źródło:
Bulletin of the Section of Logic; 2015, 44, 1-2
0138-0680
2449-836X
Pojawia się w:
Bulletin of the Section of Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectrum localization of a perturbed operator in a strip and applications
Autorzy:
Gil', Michael
Powiązania:
https://bibliotekanauki.pl/articles/2051904.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
operator
spectrum
perturbation
approximation
integral operator
matrix
Opis:
Let $A$ and $\tilde{A}$ be bounded operators in a Hilbert space. We consider the following problem: let the spectrum of $A$ lie in some strip. In what strip the spectrum of $\tilde{A}$ lies if $A$ and $\tilde{A}$ are “close”? Applications of the obtained results to integral operators and matrices are also discussed. In addition, we apply our perturbation results to approximate the spectral strip of a Hilbert-Schmidt operator by the spectral strips of finite matrices.
Źródło:
Opuscula Mathematica; 2021, 41, 3; 395-412
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Norm estimates of discrete Schrödinger operators
Autorzy:
Szwarc, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/966035.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
norm estimate
Harper's operator
difference operator
Opis:
Harper's operator is defined on $\ell^2({\sym Z})$ by $$ H_\theta \xi(n) = \xi(n+1) + \xi(n-1) + 2\cos n\theta\, \xi(n), $$ where $\theta\! \in \![0,\pi]$. We show that the norm of $\|H_\theta\|$ is less than or equal to $2\sqrt{2}$ for $\pi/2 \le\theta\le \pi$. This solves a conjecture stated in [1]. A general formula for estimating the norm of self-adjoint tridiagonal infinite matrices is also derived.
Źródło:
Colloquium Mathematicum; 1998, 76, 1; 153-160
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convex and monotone operator functions
Autorzy:
Aujla, Jaspal
Vasudeva, H.
Powiązania:
https://bibliotekanauki.pl/articles/1311464.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
operator monotone function
operator convex function
Opis:
The purpose of this note is to provide characterizations of operator convexity and give an alternative proof of a two-dimensional analogue of a theorem of Löwner concerning operator monotonicity.
Źródło:
Annales Polonici Mathematici; 1995, 62, 1; 1-11
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A sixth-order finite volume method for the 1D biharmonic operator: Application to intramedullary nail simulation
Autorzy:
Costa, R.
Machado, G. J.
Clain, S.
Powiązania:
https://bibliotekanauki.pl/articles/330268.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
finite volume method
polynomial reconstruction operator
harmonic operator
biharmonic operator
high order method
Opis:
A new very high-order finite volume method to solve problems with harmonic and biharmonic operators for one-dimensional geometries is proposed. The main ingredient is polynomial reconstruction based on local interpolations of mean values providing accurate approximations of the solution up to the sixth-order accuracy. First developed with the harmonic operator, an extension for the biharmonic operator is obtained, which allows designing a very high-order finite volume scheme where the solution is obtained by solving a matrix-free problem. An application in elasticity coupling the two operators is presented. We consider a beam subject to a combination of tensile and bending loads, where the main goal is the stress critical point determination for an intramedullary nail.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 3; 529-537
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
About a class of analytic functions defined by Noor-Sǎlǎgean integral operator
Autorzy:
Engel, O.
Chung, Y. L.
Powiązania:
https://bibliotekanauki.pl/articles/357730.pdf
Data publikacji:
2016
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
Noor integral operator
Salagean integral operator
convolution
operator integralny
funkcja analityczna
analiza matematyczna
Opis:
In this paper we intoduce a new integral operator as the convolution of the Noor and Salagean integral operators. With this integral operator we define the class $C_{NS}(\alpha)$, where $\alpha \in [0,1)$ and we study some properties of this class.
Źródło:
Journal of Mathematics and Applications; 2016, 39; 59-67
1733-6775
2300-9926
Pojawia się w:
Journal of Mathematics and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An algebraic analysis approach to 2-D discrete problems
Autorzy:
Przeworska-Rolewicz, D.
Wysocki, H.
Powiązania:
https://bibliotekanauki.pl/articles/206798.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
analiza algebraiczna
operator początkowy
operator różnicowy
2D systems
algebraic analysis
backward shift
difference operator
forward shift
initial operator
right inverse
right invertible operator
Opis:
A model of algebraic analysis for the 2-index sequences (of the type 2-D) is considered. For difference operators of the form D{x_m,n}:= {x_m+1,n+1 - A_m,nX_m,n} the right inverses and the corresponding initial operators are constructed. Having already known the initial operators, one can determine solutions of the corresponding initial value problems.
Źródło:
Control and Cybernetics; 2001, 30, 2; 149-158
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quasilinear vector differential equations with maximal monotone terms and nonlinear boundary conditions
Autorzy:
Bader, Ralf
Papageorgiou, Nikolaos
Powiązania:
https://bibliotekanauki.pl/articles/1208032.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Dirichlet
maximal monotone operator
Yosida approximation
monotone operator
resolvent operator
measurable selection
demicontinuous operator
Neumann and periodic problems
coercive operator
projection theorem
Opis:
We consider a quasilinear vector differential equation which involves the p-Laplacian and a maximal monotone map. The boundary conditions are nonlinear and are determined by a generally multivalued, maximal monotone map. We prove two existence theorems. The first assumes that the maximal monotone map involved is everywhere defined and in the second we drop this requirement at the expense of strengthening the growth hypothesis on the vector field. The proofs are based on the theory of operators of monotone type and on the Leray-Schauder fixed point theorem. At the end we present some special cases (including the classical Dirichlet, Neumann and periodic problems), which illustrate the general and unifying features of our work.
Źródło:
Annales Polonici Mathematici; 2000, 73, 1; 69-92
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie funkcji "interest operator" w półautomatycznej aerotriangulacji
Autorzy:
Ziobro, J.
Kaczyński, R.
Powiązania:
https://bibliotekanauki.pl/articles/130090.pdf
Data publikacji:
1999
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
aerotriangulacja
funkcja Interest Operator
aerotriangulation
Interest Operator function
Opis:
Przedstawiono wyniki badania przydatności funkcji interest operator w wyborze punktu wiążącego w półautomatycznej aerotriangulacji, wykonywanej na stacji fotogrametrycznej ImageStation 6487. Przedstawiono zarys problemu wyboru punktu wiążącego oraz wyniki pomiarów doświadczalnych.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 1999, 9; 19-23
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A quasi-affine transform of an unbounded operator
Autorzy:
Ôta, Schôichi
Powiązania:
https://bibliotekanauki.pl/articles/1289890.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
quasi-affine transform
subnormal operator
formally hyponormal operator
Opis:
Some results on quasi-affinity for bounded operators are extended to unbounded ones and normal extensions of an unbounded operator are discussed in connection with quasi-affinity.
Źródło:
Studia Mathematica; 1994-1995, 112, 3; 279-284
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Generalized Saddle-Node Bifurcation of Degenerate Solution
Autorzy:
Liu, Ping
Wang, Yu-Wen
Powiązania:
https://bibliotekanauki.pl/articles/746396.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Operator equation
bifurcation
generalized inverse of operator
Opis:
In this paper we discuss the bifurcation problem for the abstract operator equation of the form \(F (u, \lambda) = \theta\) with a parameter \(\lambda\), where \(F\colon X \times R \to Y\) is a \(C^1\) mapping, \(X, Y\) are Banach spaces. By the bounded linear generalized inverse \(A^+\) of \(A = F_u (u_0 , \lambda_0 )\), an abstract bifurcation theorem for the case \(\operatorname{dim}N (F_u (u_0 , \lambda_0 )) \geq \operatorname{codim} R(F_u (u_0 , \lambda_0 )) = 1\) has been obtained.
Źródło:
Commentationes Mathematicae; 2005, 45, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On M-operators of q-lattices
Autorzy:
Halaš, Radomír
Powiązania:
https://bibliotekanauki.pl/articles/729005.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
(complete) q-lattice
closure operator
M-operator
Opis:
It is well known that every complete lattice can be considered as a complete lattice of closed sets with respect to appropriate closure operator. The theory of q-lattices as a natural generalization of lattices gives rise to a question whether a similar statement is true in the case of q-lattices. In the paper the so-called M-operators are introduced and it is shown that complete q-lattices are q-lattices of closed sets with respect to M-operators.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2002, 22, 2; 119-129
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on uniformly bounded composition operator acting between Banach spaces of functions of two variables of bounded schramm Φ-variation
Autorzy:
Ereú, T.
Merentes, N.
Wróbel, M.
Powiązania:
https://bibliotekanauki.pl/articles/121783.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
composition operator
affine function
operator kompozycji
funkcja ograniczona
Opis:
In this paper we prove that if the composition operator H of generator h : Ib a × C → Y (X is a real normed space, Y is a real Banach space, C is a convex cone in X and Ib a ⸦ R2) maps Φ1 BV (Ib a, C) into Φ2 BV (Ib a, Y) and is uniformly bounded, then the left-left regularization h* of h is an affine function in the third variable.
Źródło:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2013, 18; 19-27
2450-9302
Pojawia się w:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach to increase both operators' safety and devices' availability under operation
Autorzy:
Gliwiński, M.
Szpytko, J.
Powiązania:
https://bibliotekanauki.pl/articles/246134.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
availability
operator
devices
Opis:
The paper is focusing on increasing both operators' safety and devices' availability under operation. Each process supported by any composition of the man-devices set it is possible to present and described by selected operation (exploitation) parameters, which can be a subject of monitoring. With use process operation parameters set the target-oriented production Key Performance Indicator has been proposed. Base on Key Performance Indicator both operators' safety and devices' availability analysis is possible in practice. Paper composition contains: solution description, good practice examples discussion and conclusions. Safety of man/ operators and availability of devices are very important for everybody and using preventive one solution we can increase and protect both. Additional process operation parameters monitoring, as well as measuring, are an important factors increases people 's awareness. Two different approaches of the same process have been described on examples coming from manufacture. The following approaches have been taken under consideration: traditional one based on reactive maintenance and new approach based on preventive maintenance. The comparison of both scenarios was discussed. For human's safety and dependability of devices, responsibility of all involved employees in practice is equal.
Źródło:
Journal of KONES; 2010, 17, 1; 143-147
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the separation axioms of topologies generatedby regular sequences of measurable sets
O aksjomatach odzielania topologii generowanych przez regularne ciągi zbiorów mierzalnych
Autorzy:
Widzibor, Mikołaj
Powiązania:
https://bibliotekanauki.pl/articles/1837617.pdf
Data publikacji:
2019
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
lower density operator
topology generated by lower density operator
density topology
operator dolnej gęstości
topologia generowana przez operator dolnej gęstości
topologia gęstości
Opis:
In this paper we study separation axioms for S-density topology, which is a generalization of the classical density topology. Namely, we prove that if the sequence of sets is regular, then the topology generated by it is completely regular, but is not normal.
W przedstawionym artykule badamy aksjomaty oddzielania dla topologii S-gęstości, które są uogólnieniem klasycznej topologii gęstości. Głównym wynikiem jest całkowita regularność topologii generowanej przez regularny ciąg zbiorów zbieżny do zera. Pokazujemy też, że tego typu topologie nie są normalne
Źródło:
Bulletin de la Société des Sciences et des Lettres de Łódź, Série: Recherches sur les déformations; 2019, 69, 1; 109-116
1895-7838
2450-9329
Pojawia się w:
Bulletin de la Société des Sciences et des Lettres de Łódź, Série: Recherches sur les déformations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feedback stabilization of one-dimensional parabolic systems related to formations
Autorzy:
Sano, H.
Powiązania:
https://bibliotekanauki.pl/articles/201667.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Sturm-Liouville operator
parabolic system
unbounded output operator
stabilization
residual mode filter
operator Sturm-Liouville
system paraboliczny
nieograniczony operator wyjścia
stabilizacja
Opis:
This paper is concerned with the problem of stabilizing one-dimensional parabolic systems related to formations by using finitedimensional controllers of a modal type. The parabolic system is described by a Sturm-Liouville operator, and the boundary condition is different from any of Dirichlet type, Neumann type, and Robin type, since it contains the time derivative of boundary values. In this paper, it is shown that the system is formulated as an evolution equation with unbounded output operator in a Hilbert space, and further that it is stabilized by using an RMF (residual mode filter)-based controller which is of finite-dimension. A numerical simulation result is also given to demonstrate the validity of the finite-dimensional controller.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 1; 295-303
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of environmental, ergonomic factors and properties of operators on the reliability of ships propulsion systems
Autorzy:
Frąckowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/247900.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
propulsion system
operator
reliability
analysis
operator functions
Performance Shaping Factor
Opis:
Analyzing the systems in terms of reliability, we often treat them as the technical objects only, omitting human interaction or assuming that operator has constant characteristics. This significantly distorts the results obtained in this way, since human is a part of the system with special properties that can change together with the predisposition of the operator and the conditions under which he operates. These attributes may have a major influence on the reliability of the systems. Therefore, analysis of systems reliability should include a reliability of operator and its properties. In this paper presented the antropotechnical reliability structure based on selected installation, which is a part of ships propulsion system. Also operator’s functions were defined and the analysis of human reliability, taking into account various properties of the operator and the external conditions, were performed. Then, there is assessed the influence of operator and environmental factors on the value of the entire system reliability. The study used the reliability data of the container ship propulsion system equipped with low-speed piston engine, fixed pitch propeller and auxiliary installations. These data were obtained from studies of expert judgments (Brandowski A., Frąckowiak W. et al.) in the years 2007–2009. For HRA (human reliability analysis), HEART technique (Human Error Assessment and Reduction Technique) was used, together with the human unreliability values and correction factors developed by the authors of this method. Study results illustrate influence of environmental, ergonomic factors and the properties of the operator on the reliability of the antropotechnical systems. The studies were subjected exemplification on fuel treatment installation as a part of ships propulsion systems.
Źródło:
Journal of KONES; 2012, 19, 2; 145-151
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Closed operators affiliated with a Banach algebra of operators
Autorzy:
Barnes, Bruce A.
Powiązania:
https://bibliotekanauki.pl/articles/1293309.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
closed operator
spectrum
Fredholm operator
semigroup of operators
Banach algebra
Opis:
Let ℬ be a Banach algebra of bounded linear operators on a Banach space X. If S is a closed operator in X such that (λ - S)^{-1} ∈ ℬ for some number λ, then S is affiliated with ℬ. The object of this paper is to study the spectral theory and Fredholm theory relative to ℬ of an operator which is affiliated with ℬ. Also, applications are given to semigroups of operators which are contained in ℬ.
Źródło:
Studia Mathematica; 1991-1992, 101, 3; 215-240
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł

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