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Wyszukujesz frazę "operators" wg kryterium: Temat


Tytuł:
$L^p$-convergence of Bernstein-Kantorovich-type operators
Autorzy:
Campiti, Michele
Metafune, Giorgio
Powiązania:
https://bibliotekanauki.pl/articles/1311141.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Kantorovich operators
quantitative estimates
Opis:
We study a Kantorovich-type modification of the operators introduced in [1] and we characterize their convergence in the $L^p$-norm. We also furnish a quantitative estimate of the convergence.
Źródło:
Annales Polonici Mathematici; 1996, 63, 3; 273-280
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
"Ponad" – "około" – "gdzieś" – "dobry", czyli o aproksymatorach na różnych piętrach nieprzedmiotowego poziomu języka
"Ponad" – "około" – "gdzieś" – "dobry" (‘over’ – ‘about’ – ‘somewhere’ – ‘good’), or about the approximators on different floors of the non-objective level of language
Autorzy:
Doboszyńska-Markiewicz, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/29431832.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Mikołaja Kopernika w Toruniu. Wydawnictwo UMK
Tematy:
aproksymatory
operatory adnumeratywne
metatekst
discourse markers
gramatykalizacja
approximators
adnumerative operators
metatext
grammaticalization
Opis:
Artykuł ukazuje polskie aproksymatory o różnych właściwościach formalnych jako ilustrację teorii klasyfikacji wyrażeń metatekstowych Jadwigi Wajszczuk. Są to dawne przyimki, zaimki i przymiotniki jakościowe, które przeszły z przedmiotowego na nieprzedmiotowy poziom języka (proces gramatykalizacji), zmieniając swoje cechy gramatyczne i znaczeniowe. Chociaż w klasyfikacji Wajszczuk aproksymatory zaliczone zostały do operatorów metapredykatywnych, część z nich wykazuje cechy metaoperatorów, a inne plasują się na pograniczu metatekstu i słownictwa przedmiotowego.
The article presents Polish approximators with different formal properties as an illustration of Jadwiga Wajszczuk’s theory of metatextual expression classification. These are former prepositions, pronouns, and qualitative adjectives, which have passed from the object to the non-object level of language (the process of grammaticalization), changing their grammatical and semantic features. Although in Wajszczuk’s classification approximators are classified as metapredicative operators, some of them show features of meta-operators, whereas others are classified somewhere between metatext and object vocabulary.
Źródło:
Linguistica Copernicana; 2023, 19; 71-87
2080-1068
2391-7768
Pojawia się w:
Linguistica Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
1D and 2D finite-difference operators for periodic functions on arbitrary mesh
Autorzy:
Sobczyk, Tadeusz Jan
Powiązania:
https://bibliotekanauki.pl/articles/2042801.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
arbitrary meshes
finite-difference operators
partial finite difference operators
periodic function
two-variable periodic functions
Opis:
This paper presents novel discrete differential operators for periodic functions of one- and two-variables, which relate the values of the derivatives to the values of the function itself for a set of arbitrarily chosen points over the function’s area. It is very characteristic, that the values of the derivatives at each point depend on the function values at all points in that area. Such operators allow one to easily create finite-difference equations for boundaryvalue problems. The operators are addressed especially to nonlinear differential equations.
Źródło:
Archives of Electrical Engineering; 2022, 71, 1; 265-275
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
2010 and 2011 EU Competition Law and Sector-specific Regulatory Jurisprudence and Case Law Developments with a Nexus to Poland
Autorzy:
Mościbroda, Anna
Kuik, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/530365.pdf
Data publikacji:
2012-11-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
telecommunication
pharmaceuticals
antitrust
cartel
competition law
Commission decision
state aid
merger control
case law
regulatory cases
infringement
preliminary ruling
Electronic Communications Framework
broadband
alternative operators
powers of NCA
Regulation 1/2003
modernisation
procedural autonomy
number portability
conditional approval
general prohibition of combined sales
publication requirements
Act of Accession
internet tariffs
Universal Service Directive
Framework Directive
retail broadband tariffs
generic products
marketing authorisations
Opis:
This third overview of EU competition and sector-specific regulatory jurisprudential and case law developments with a nexus to Poland covers the years 2010 and 2011. This period of time is worth noting for several reasons. First, EU courts delivered a significant number of judgments in ‘Polish’ cases including an increased number of preliminary rulings. Second, 2010-2011 developments were dominated by judgments and decisions concerning telecoms. Finally, the Commission adopted only a handful of Polish State aid decisions following a formal investigation procedure under Article 108(2) TFEU. The main developments in telecoms relate to the Court of Justice's preliminary reference judgment in Tele 2 Polska focusing on the interpretation of Regulation 1/2003 and the PTC v UKE ruling that dealt with number portability charges. Relevant is also the antitrust prohibition decision issued by the Commission against Telekomunikacja Polska S.A. for its refusal to grant access to its wholesale broadband services. In other fields, the Court of Justice delivered three State aid judgments (including two appeals against pre-2010 judgments of the General Court) and two judgments in infringement proceedings (regarding pre EU Accession marketing authorisations for medicines and the reutilisation of data from the public sector). The General Court ruled on appeal in the butadiene rubber cartel case (e.g. in Trade-Stomil v Commission). Finally, the Commission dealt with a merger case with a truly Polish specificity (Kraft Foods/ Cadbury), approved subject to divestiture of the E. Wedel brand.
Ce troisième aperçu portant sur les développements de la réglementation relative au droit de la concurrence de l’UE et droit séctoriel, ainsi qu’à la jurisprudence ayant un lien imporatnt avec la Pologne, couvre les années 2010 et 2011. Cette période vaut l’intérêt pour plusieurs raisons. Premièrement, les tribunaux de l'UE ont délivré un nombre important d'arrêts dans les cas « polonais » dont un nombre croissant de questions préjudicielles. Deuxièmement, les développements en 2010-2011 ont été dominés par les jugements et décisions concernant les télécommunications (télécoms). Enfin, la Commission n’a adopté qu’un petit nombre de décisions sur les aides de l’État polonais à la suite d'une procédure formelle d'examen conformément à l'article 108 (2) du TFUE. Les développements principaux dans les télécoms se rapportent au renvoi préjudiciel de la Cour de justice dans le cas Tele 2 Polska portant sur l'interprétation du règlement 1/2003 et celui relatif au cas UKE v PTC sur les frais de portabilité des numéros. La décision concernant une infraction en application adoptée par la Commission contre Telekomunikacja Polska SA pour son refus d'accorder l'accès à ses services de gros de la large bande est également pertinente. Dans les autres domaines, la CJCE a rendu trois arrêts sur les aides d'État (deux recours contre les arrêts rendus par le Tribunal de première instance avant 2010) et deux arrêts dans une procédure d'infraction (en ce qui concerne les autorisations de marketing pour la médecine préalables à l'adhésion à l’UE et la réutilisation des données du secteur public). Le Tribunal de première instance a statué sur le recours dans le cas de cartel caoutchouc butadiène (par exemple le cas Trade-Stomil v Commission). Enfin, la Commission a traité un cas de fusion avec une spécificité typiquement polonaise (Kraft Foods / Cadbury), approuvé assujetti à la cession de la marque E. Wedel.
Źródło:
Yearbook of Antitrust and Regulatory Studies; 2012, 5(7); 157-190
1689-9024
2545-0115
Pojawia się w:
Yearbook of Antitrust and Regulatory Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Functorial Approach to the Behaviour of Multidimensional Control Systems
Autorzy:
Pommaret, J. F.
Quadrat, A.
Powiązania:
https://bibliotekanauki.pl/articles/908250.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
automatyka
robotyka
multidimensional systems
weak primeness
controllability
algebraic analysis
torsion and extension functors
rings of differential operators
Opis:
We show how to use the extension and torsion functors in order to compute the torsion submodule of a differential module associated with a multidimensional control system. In particular, we show that the concept of the weak primeness of matrices corresponds to the torsion-freeness of a certain module.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2003, 13, 1; 7-13
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A general boundary value problem and its Weyl function
Autorzy:
Ryzhov, V.
Powiązania:
https://bibliotekanauki.pl/articles/255861.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
abstract boundary value problem
symmetric operators
Green formula
Weyl function
Opis:
We study the abstract boundary value problem defined in terms of the Green identity and introduce the concept of Weyl operator function M(·) that agrees with other definitions found in the current literature. In typical cases of problems arising from the multidimensional partial equations of mathematical physics the function M(·) takes values in the set of unbounded densely defined operators acting on the auxiliary boundary space. Exact formulae are obtained and essential properties of M(·) are studied. In particular, we consider boundary problems defined by various boundary conditions and justify the well known procedure that reduces such problems to the "equation on the boundary" involving the Weyl function, prove an analogue of the Borg-Levinson theorem, and link our results to the classical theory of extensions of symmetric operators.
Źródło:
Opuscula Mathematica; 2007, 27, 2; 305-331
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A general differentiation theorem for superadditive processes
Autorzy:
Sato, Ryotaro
Powiązania:
https://bibliotekanauki.pl/articles/965787.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
differentiation theorem
superadditive process
absolutely continuous norm
local ergodic theorem
semigroup of positive linear operators
Banach lattice of functions
Opis:
Let L be a Banach lattice of real-valued measurable functions on a σ-finite measure space and T={$T_t$: t < 0} be a strongly continuous semigroup of positive linear operators on the Banach lattice L. Under some suitable norm conditions on L we prove a general differentiation theorem for superadditive processes in L with respect to the semigroup T.
Źródło:
Colloquium Mathematicum; 2000, 83, 1; 125-136
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A general scheme for obtaining estimates for interior approximation of certain operators in Banach spaces
Autorzy:
Moszyński, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/748401.pdf
Data publikacji:
1979
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Equations and inequalities involving linear operators, with vector unknowns, Equations with linear operators
Opis:
.
The author gives certain schemas of approximation to certain bounded linear operators in Banach spaces by means of families of simpler operators and of approximation to solutions of linear equations. Estimates of accuracy are given, which seem to be the main aim of the paper. The very technical character of the paper makes it impossible to give here a more detailed description of the contents.
Źródło:
Mathematica Applicanda; 1979, 7, 14
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A generalization of the Opials theorem
Autorzy:
Cegielski, A.
Powiązania:
https://bibliotekanauki.pl/articles/970267.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
punkt stały
słaba zbieżność
nonexpansive operators
asymptotically regular operators
fixed points
weak convergence
Opis:
Opial presented in 1967 a theorem, which can be applied in order to prove the weak convergence of sequences (xk) in a Hilbert space, generated by iterative schemes of the form xk+1= Uxk for a nonexpansive and asymptotically regular operator U with nonempty Fix U. Several iterative schemes have, however, the form xk+i1 = UkXk, where (Uk) is a sequence of operators with a common fixed point. We show that under some conditions on the sequence (Uk) the sequence (xk) converges weakly to a common fixed point of operators Uk- We show also that the Opial's theorem and the Krasnoselskii-Mann theorem are the corollaries descending from the obtained results. Finally, we present some applications of the results to the convex feasibility problems.
Źródło:
Control and Cybernetics; 2007, 36, 3; 601-610
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A generalized fractional calculus of variations
Autorzy:
Odzijewicz, T.
Malinowska, A. B.
Torres, D. F. M.
Powiązania:
https://bibliotekanauki.pl/articles/205955.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
generalized fractional operators fractional variational analysis
Euler-Lagrange equations
natural boundary conditions
Noether's theorem
damped harmonic oscillator
Opis:
We study incommensurate fractional variational problems in terms of a generalized fractional integral with Lagrangians depending on classical derivatives and generalized fractional integrals and derivatives. We obtain necessary optimality conditions for the basic and isoperimetric problems, transversality conditions for free boundary value problems, and a generalized Noether type theorem.
Źródło:
Control and Cybernetics; 2013, 42, 2; 443-458
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A geometric estimate for a periodic Schrödinger operator
Autorzy:
Friedrich, Thomas
Powiązania:
https://bibliotekanauki.pl/articles/965804.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
spectrum
Fenchel inequality
Schrödinger operators
surfaces
Dirac operator
Opis:
We estimate from below by geometric data the eigenvalues of the periodic Sturm-Liouville operator $-4{d^2}/{ds^2} + κ^2(s)$ with potential given by the curvature of a closed curve.
Źródło:
Colloquium Mathematicum; 2000, 83, 2; 209-216
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A natural localization of Hardy spaces in several complex variables
Autorzy:
Putinar, Mihai
Wolff, Roland
Powiązania:
https://bibliotekanauki.pl/articles/1294811.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
weakly pseudoconvex domain
Hardy space
quasi-coherent module
Bishop's property (β)
Toeplitz operators
Opis:
Let H²(bΩ) be the Hardy space of a bounded weakly pseudoconvex domain in $ℂ^n$. The natural resolution of this space, provided by the tangential Cauchy-Riemann complex, is used to show that H²(bΩ) has the important localization property known as Bishop's property (β). The paper is accompanied by some applications, previously known only for Bergman spaces.
Źródło:
Annales Polonici Mathematici; 1997, 66, 1; 183-201
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on the Combined Effect of Noise and Vibration on the Performance of a Readability Task in a Mobile Driving Environment by Operators of Different Ages
Autorzy:
Khan, I. A.
Mallick, Z.
Khan, Z. A.
Muzammil, M.
Powiązania:
https://bibliotekanauki.pl/articles/91209.pdf
Data publikacji:
2009
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
noise
equivalent acceleration of vibration
task performance
mobile environment
operator’s age
Opis:
This study investigated the combined effect of noise and vibration on the performance of a readability task in a mobile driving environment by operators of different ages. Subjects performed a readability task on a laptop computer in a sitting posture without their backs supported under varying levels of noise and vibration. Data in terms of a mean number of characters read per minute were collected and statistically analyzed. Results showed that the individual effects of noise, vibration, and operators’ age as well as the interaction between operators’ age and vibration were statistically significant. However, the combined effect of noise and vibration was not found to be statistically significant. Results also indicated that the operators’ age was statistically significant at all levels of vibration and vibration was statistically significant at all levels of operators’ age.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2009, 15, 3; 277-286
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Tikhonov-type theorem for abstract parabolic differential inclusions in Banach spaces
Autorzy:
Gudovich, Anastasie
Kamenski, Mikhail
Nistri, Paolo
Powiązania:
https://bibliotekanauki.pl/articles/729318.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
singular perturbations
differential inclusions
analytic semigroups
multivalued compact operators
Lipschitz selections
Opis:
We consider a class of singularly perturbed systems of semilinear parabolic differential inclusions in infinite dimensional spaces. For such a class we prove a Tikhonov-type theorem for a suitably defined subset of the set of all solutions for ε ≥ 0, where ε is the perturbation parameter. Specifically, assuming the existence of a Lipschitz selector of the involved multivalued maps we can define a nonempty subset $Z_L(ε)$ of the solution set of the singularly perturbed system. This subset is the set of the Hölder continuous solutions defined in [0,d], d > 0 with prescribed exponent and constant L. We show that $Z_L(ε)$ is uppersemicontinuous at ε = 0 in the C[0,d]×C[δ,d] topology for any δ ∈ (0,d].
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2001, 21, 2; 207-234
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
About Implementation of IEC 61131-3 IL Function Blocks in Standard Microcontrollers
Autorzy:
Chmiel, M.
Mocha, J.
Hrynkiewicz, E.
Polok, D.
Powiązania:
https://bibliotekanauki.pl/articles/226742.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
central processing unit
programmable logic controller
microprocessor control
microprogramming
programming languages
language operators
Opis:
The paper presents considerations on implementation of function blocks of the IL language, as fragments of control programs that use these blocks. Subsequently, the predefined function blocks of the IL language have been applied to implementation in a Central Processing Unit for a programmable controller based on standard microcontroller from such families as MCS-51, AVR and ARM with the Cortex-M3 core. The considerations refer to the IL language revision that is fully compliant with the IEC-61131-3 standards. The completed theoretical analysis demonstrated that the adopted method of the module description is really reasonable and offers substantial advantages as compared to direct calls of function modules already developed as subroutines. Also the executed experiments have proved the feasibility to arrange central units of programmable controllers on the basis of standard microcontrollers and such central units may be competitive to compact CPUs available on the market for typical PLCs.
Źródło:
International Journal of Electronics and Telecommunications; 2014, 60, 1; 42-46
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł

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