Wyniki wyszukiwania dla: INEQUALITIES - MOST Wiedzy

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Wyniki wyszukiwania dla: INEQUALITIES

Wyniki wyszukiwania dla: INEQUALITIES

  • Difference functional inequalities and applications.

    Publikacja

    The paper deals with the difference inequalities generated by initial boundary value problems for hyperbolic nonlinear differential functional systems. We apply this result to investigate the stability of constructed difference schemes. The proof of the convergence of the difference method is based on the comparison technique, and the result for difference functional inequalities is used. Numerical examples are presented.

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  • Implicit difference functional inequalities and applications

    Publikacja

    Klasyczne rozwiązania problemów początkowych przybliżane są rozwiązaniami uwikłanych metod różnicowych. Wykazana została zbieżność i stabilność uwikłanych schematów. Przy założeniu, że funkcje dane spełniają nieliniowe oszacowanie typu Perrona względem argumentu funkcyjnego, udowodniono stabilność metody uwikłanej, wykorzystując twierdzenie porównawcze dla funkcji spełniających uwikłane nierówności różnicowe typu Volterry.

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  • Differential inequalities with initial time difference.

    Publikacja

    Uzyskano pewne wyniki porównawcze pomiędzy rozwiązaniami nierówności różniczkowych startujących z różnych punktów początkowych. O nieliniowej funkcji f (związanej z zagadnieniem) zakładano jednostronny warunek Lipschitza. Podano pewne zastosowanie otrzymanych wyników. Sformułowano też pewne warunki dotyczące stabilności.

  • Morse inequalities via Conley index theory

    Publikacja

    The relation known as the Morse inequalities can be extended to a more general setting of flows on a locally compact metric spaces (Conley index) as well as dynamical systems on Hilbert spaces (LS-index). This paper is a discourse around this extension. Except the part concerning the LS-index the material is self-contained and has a character of a survey.

  • Intra-provincial inequalities and economic growth in China

    Publikacja
    • J. Gravier-Rymaszewska
    • J. Tyrowicz
    • J. Kochanowicz

    - Economic Systems - Rok 2010

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  • Systems of differential inequalities with initial time difference.

    Publikacja

    - Rok 2004

    Pewne twierdzenia porównawcze są formułowane dla takich zagadnień.O funkcji F występującej po prawej stronie nierówności różniczkowej zakłada się, że spełnia własności kwasimonotoniczności. Sformułowanorównież twierdzenia o istnieniu ekstremalnych rozwiązań dla odpowiednich równań różniczkowych pierwszego rzędu z odchylonymi argumentami.

  • Delay differential inequalities with initial time difference

    Publikacja

    - Rok 2006

    Praca dotyczy nierówności różniczkowych z argumentami opóźnionymi przy różnych warunkach początkowych. Podano twierdzenia porównawcze dla takich nierówności. Podano też warunki dostateczne na istnienie ekstremalnych rozwiązań odpowiednich równań różniczkowych z argumentami opóźnionymi.

  • Journal of Health Inequalities

    Czasopisma

    ISSN: 2450-5927 , eISSN: 2450-5722

  • JOURNAL OF INEQUALITIES AND APPLICATIONS

    Czasopisma

    ISSN: 1029-242X , eISSN: 1025-5834

  • Journal of Mathematical Inequalities

    Czasopisma

    ISSN: 1846-579X

  • Dynamic inequalities and equations of Volterra type on time scales

    Praca dotyczy całkowo-różniczkowych równań dynamicznych typu Volterry z warunkami początkowymi. Stosując twierdzenie Banacha o punkcie stałym pokazano istnienie jedynego rozwiązania liniowego równania dynamicznego. Stosując metodę iteracji monotonicznych pokazano istnienie rozwiązań ekstremalnych dla problemów nieliniowych. Badano też nierówności dynamiczne. Praca zawiera również uwagi dotyczące zagadnień różniczkowych i różnicowych.

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  • Within- and between-firm wage inequalities and trade integration in GVC

    This paper examines between- (inter) and within- (intra) firm wage inequality using rich employer-employee data for 12 European countries. We confirm that much overall wage inequality is observed within sectors and within occupations. The share of the within- and between-firm components in overall wage inequality varies across countries. We estimate the link between involvement in global value chains (GVCs) and wages differentiating...

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  • Digital Gaps and Economic Inequalities in MENA Countries: An Empirical Investigation

    Publikacja

    - Rok 2022

    This research contributes to the present state of the art by examining changes in cross-country inequalities in digital technologies deployment and economic performance. Our empirical target builds on the hypothesis that rapid global diffusion of digital technologies unequivocally leads to gradual eradication of cross-country digital gaps and cross-country inequalities in terms of deployment of ICT; the technology convergence occurs....

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  • Bound on Bell inequalities by fraction of determinism and reverse triangle inequality

    Publikacja
    • P. Joshi
    • K. Horodecki
    • M. Horodecki
    • P. Horodecki
    • R. Horodecki
    • B. Li
    • S. Szarek
    • T. Szarek

    - PHYSICAL REVIEW A - Rok 2015

    It is an established fact that entanglement is a resource. Sharing an entangled state leads to nonlocal correlations and to violations of Bell inequalities. Such nonlocal correlations illustrate the advantage of quantum resources over classical resources. In this paper, we quantitatively study Bell inequalities with 2 × n inputs. As found in Gisin et al. [Int. J. Quantum. Inform. 05, 525 (2007)], quantum mechanical correlations...

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  • Intrinsic asymmetry with respect to adversary: a new feature of Bell inequalities

    Publikacja

    - Journal of Physics A-Mathematical and Theoretical - Rok 2014

    It is known that the local bound of a Bell inequality is sensitive to the knowledge of the external observer about the settings statistics. Here we ask how that sensitivity depends on the structure of that knowledge. It turns out that in some cases it may happen that the local bound is much more sensitive to the adversaryʼs knowledge about the settings of one party than the other. Remarkably, there are Bell inequalities which are...

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  • Strong Monogamies of No-Signaling Violations for Bipartite Correlation Bell Inequalities

    Publikacja

    - PHYSICAL REVIEW LETTERS - Rok 2014

    The phenomenon of monogamy of Bell inequality violations is interesting both from the fundamental perspective as well as in cryptographic applications such as the extraction of randomness and secret bits. In this article, we derive new and stronger monogamy relations for violations of Bell inequalities in general no-signaling theories. These relations are applicable to the class of binary output correlation inequalities known as...

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  • Generalized solutions of first order partial differential functional inequalities

    Publikacja

    - Rok 2006

    W pracy rozważa się zagadnienia początkowo brzegowe dla nieliniowych równań różniczkowo funkcyjnych cząstkowych pierwszego rzędu. Podano dowód jednoznaczności rozwiązań uogólnionych. Oparty jest on na twierdzeniu porównawczym dla nierówności różniczkowo funkcyjnych w sensie Caratheodory'ego. Prezentowane jest twierdzenie o uogólnionych rozwiązaniach nierówności różniczkowo funkcyjnych.

  • Delay integro-differential inequalities with initial time difference and applications.

    Publikacja

    - Rok 2004

    Praca dotyczy nierówności różniczko-całkowych z opóźnionymi argumentami przy różnych warunkach początkowych. Przy pewnych założeniach (m.in. monotoniczność, jednostronny warunek Lipschitza) sformułowano twierdzenia porównawcze dla rozwiązań w.w nierówności. Pokazano zastosowania w technice iteracji monotonicznych i sformułowano warunki dostateczne na istnienie rozwiązań ekstremalnych dla równań różniczkowo-całkowych z odchylonymi...

  • Bell-Type Inequalities from the Perspective of Non-Newtonian Calculus

    Publikacja

    A class of quantum probabilities is reformulated in terms of non-Newtonian calculus and projective arithmetic. The model generalizes spin-1/2 singlet state probabilities discussed in Czachor (Acta Physica Polonica:139 70–83, 2021) to arbitrary spins s. For s → ∞ the formalism reduces to ordinary arithmetic and calculus. Accordingly, the limit “non-Newtonian to Newtonian” becomes analogous to the classical limit of a quantum theory

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  • Advances in Nonlinear Variational Inequalities

    Czasopisma

    ISSN: 1092-910X

  • Journal of Inequalities and Special Functions

    Czasopisma

    ISSN: 2217-4303

  • Linear game non-contextuality and Bell inequalities—a graph-theoretic approach

    Publikacja

    - NEW JOURNAL OF PHYSICS - Rok 2016

    We study the classical and quantum values of a class of one-and two-party unique games, that generalizes the well-known XOR games to the case of non-binary outcomes. In the bipartite case the generalized XOR(XOR-d) games we study are a subclass of the well-known linear games. We introduce a 'constraint graph' associated to such a game, with the constraints defining the game represented by an edge-coloring of the graph. We use the...

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  • Beyond the standard entropic inequalities: stronger scalar separability criteria and their applications

    Niedawno pokazano, że jeżeli dwupodukładowy stan kwantowy spełnia strukturalne kryterium separowalności oparte na pewnym liniowym odwzorowaniu dodatnim (tzw. odwzorowanie redukcyjne) to musi także spełniać skalarne kryterium separowalności oparte na nierównościach entropijnych. Ponieważ nierówności te są obiecującymi z eksperymentalnego punktu widzenia detektorami splątania w układach kwantowych, interesującym wydaje się pytanie...

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  • Differential difference inequalities related to hyperbolic functional differential systems and applications

    Publikacja

    Zagadnienie początkowo brzegowe dla ukadów quasiliniowych równań różniczkowo funkcyjnych przeksztacane jest w układ równań różniczkowych zwyczajnych poprzez dyskretyzację względem zmiennej przestrzennej. Podane są warunki wystarczające dla zbieżności metody prostych. Otrzymany układ równań różniczkowo funkcyjnych zwyczajnych jest rozwiązywany uwikłaną metodą różnicową. Zbieżność schematu różnicowego jest dowodzona metodą porównawczą....

  • Nierówności Społeczne a Wzrost Gospodarczy

    Czasopisma

    ISSN: 1898-5084 , eISSN: 2658-0780

  • Labour share and income inequalities in the European Union, taking into account the level of development of economies

    esearch background: The relationship between labour share and income inequality is a complex and multifaceted problem. Despite ongoing discussions among economists, there is still no consensus on the direction of the relationship between labour share and income ine-quality. Purpose of the article: The article aims to assess the impact of labour share on income inequal-ity, which is measured in three ways: the Gini index...

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  • Digital divide - inequalities in level of implementation of new information and telecommunication technologies. Cross country study

    Publikacja

    - Rok 2010

    Tekst stanowi analizę nierówności stopnia wdrożenia oraz implementacji ICTs w różnych krajach świata. Autor szacuje wskaźnik GINI dla możliwych krajów świata.In the paper presented, the author considers few aspects of the so-called "digital divide". It is easily noticeable worldwide, that new information and communication technologies (ICTs) "possess" a great ability to spread, at high pace, among countries from all around the...

  • Bound entanglement maximally violating Bell inequalities: quantum entanglement is not fully equivalent to cryptographic security

    Publikacja

    W pracy pokazano, że czterokubitowy stan o splątaniu związanym może maksymalnie łamać prostą nierówność Bella podobną do standardowej nierówności CHSH. Prostota rozważanego układu oraz odporność splątania sprawiają, że łamanie to jest obiecujące dla współczesnej technologii eksperymentalnej. Z drugiej strony, splątanie tego stanu nie pozwala na destylację bezpiecznego klucza kryptograficznego, zatem ani splątanie, ani maksymalne...

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  • Attempt to eliminate health inequalities in Poland arising at the time of political and economic transformation: Polish 400 Cities Project

    Publikacja
    • T. Zdrojewski
    • B. Wyrzykowski
    • L. Wierucki
    • T. Grodzicki
    • A. Januszewicz
    • K. Narkiewicz
    • M. Zarzeczna-Baran
    • J. Gluszek
    • G. Opolski
    • W. Zatonski... i 2 innych

    - EUROPEAN JOURNAL OF CARDIOVASCULAR PREVENTION & REHABILITATION - Rok 2006

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  • Jean Monnet Chair Workshop on Income and Wealth Inequalities

    Wydarzenia

    28-06-2018 09:00 - 28-06-2018 12:30

    Otwarte i bezpłatne warsztaty naukowe organizowane w ramach Jean Monnet Chair. Spotkanie w języku angielskim. Obowiązują wcześniejsze zapisy: jwo@zie.pg.gda.pl do 21.06.2018 r.

  • MATHEMATICAL INEQUALITIES & APPLICATIONS

    Czasopisma

    ISSN: 1331-4343

  • On delay differential equations with almost periodic boundary conditions started from different points

    Dyskutowany jest problem istnienia ekstremalnych rozwiązań dla równań różniczkowych typu opóźnionego przy odpowiednich warunkach brzegowych. Sformułowano odpowiednie twierdzenia porównawcze. W pracy zawarte są również wyniki dotyczące takich równań przy większej ilości argumentów opóźnionych.

  • Contra Bellum: Bell's Theorem as a Confusion of Languages

    Publikacja

    Bell's theorem is a conflict of mathematical predictions formulated within an infinite hierarchy of mathematical models. Inequalities formulated at level k ∈ Z are violated by probabilities at level k+1. We are inclined to think that k=0 corresponds to the classical world, while k=1 — to the quantum one. However, as the k=0 inequalities are violated by k=1 probabilities, the same relation holds between k=1 inequalities violated...

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  • Trade-offs in multiparty Bell-inequality violations in qubit networks

    Publikacja

    - PHYSICAL REVIEW A - Rok 2018

    Two overlapping bipartite binary input Bell inequalities cannot be simultaneously violated as this would contradict the usual no-signalling principle. This property is known as monogamy of Bell inequality violations and generally Bell monogamy relations refer to trade-offs between simultaneous violations of multiple inequalities. It turns out that multipartite Bell inequalities admit weaker forms of monogamies that allow for violations...

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  • Relationship between semi- and fully-device-independent protocols

    Publikacja
    • H. Li
    • P. A. Mironowicz
    • M. Pawłowski
    • Z. Yin
    • Y. Wu
    • S. Wang
    • W. Chen
    • H. Hu
    • G. Guo
    • Z. Han

    - PHYSICAL REVIEW A - Rok 2013

    We study the relation between semi and fully device independent protocols. As a tool, we use the correspondence between Bell inequalities and dimension witnesses. We present a method for converting the former into the latter and vice versa. This relation provides us with interesting results for both scenarios. First, we find new random number generation protocols with higher bit rates for both the semi and fully device independent...

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  • Optimization issues in distributed computing systems design

    Publikacja

    - Rok 2014

    In recent years, we observe a growing interest focused on distributed computing systems. Both industry and academia require increasing computational power to process and analyze large amount of data, including significant areas like analysis of medical data, earthquake, or weather forecast. Since distributed computing systems – similar to computer networks – are vulnerable to failures, survivability mechanisms are indispensable...

  • Concentration in ICTs sector - cross country analysis

    Publikacja

    - Rok 2010

    In the chapter below, the author present inequalities in sector of new information and communication technologies. Having in mind inequalities we can also discuss concentration issues, and the concentration itself is a problem to which the author refers on first place. The paper is organized as following: first basic measures of concentration are defined, after we can read a discussion referring to concentration in ICTs sector...

  • Boundary problems for fractional differential equations

    Publikacja

    In this paper, the existence of solutions of fractional differential equations with nonlinear boundary conditions is investigated. The monotone iterative method combined with lower and upper solutions is applied. Fractional differential inequalities are also discussed. Two examples are added to illustrate the results.

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  • Yuxin Lu Dr

    Research interests: Gravity Model of Trade; Global Value Chains; Economic Growth; Labor Market; Income Inequalities.

  • Local hidden–variable models for entangled quantum states

    Publikacja

    While entanglement and violation of Bell inequalities were initially thought to be equivalent quantum phenomena, we now have different examples of entangled states whose correlations can be described by local hidden-variable models and, therefore, do not violate any of the Bell inequalities. We provide an up-to-date overview of the existing literature regarding local hidden-variable models for entangled quantum states, in both...

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  • Strong ellipticity within the Toupin–Mindlin first strain gradient elasticity theory

    Publikacja

    We discuss the strong ellipticity (SE) condition within the Toupin–Mindlin first strain gradient elasticity theory. SE condition is closely related to certain material instabilities and describes mathematical properties of corresponding boundary-value problems. For isotropic solids, SE condition transforms into two inequalities in terms of five gradient-elastic moduli.

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  • Overcoming gender bias in the digital economy. Empirical evidence for European countries

    This study aims to contribute to understanding the gender biases that emerge in the digital technology-related field. More specifically we concentrate on examining whether gender gaps are diminishing or are persistent in terms of women’s enrollment in technology-related programs at the tertiary level of education and for female STEM graduates. Next, this evidence is confronted with gender biases in the labor market regarding changing...

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  • Enhancing Economic Development Through ICT-Based Governance: Evidence for Developing Countries

    Publikacja

    - Rok 2023

    his shows novel empirical evidence on how e-government solutions enhance the emergence of inclusive societies, increase institutional quality, and through that channels dynamize economic development in developing countries. With this aim we examine digital development inequalities adopting 2 core ICT indicators: mobile cellular telephony and Internet users; and gross per capita income and Human Development Index to show the level...

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  • Imitating Quantum Probabilities: Beyond Bell’s Theorem and Tsirelson Bounds

    Local hidden-variable model of singlet-state correlations discussed in M. Czachor, Acta Phys. Polon. A 139, 70, is shown to be a particular case of an infinite hierarchy of local hidden-variable models based on an infinite hierarchy of calculi. Violation of Bell-type inequalities can be interpreted as a `confusion of languages' problem, a result of mixing different but neighboring levels of the hierarchy. Mixing of non-neighboring...

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  • Quantum entanglement

    Publikacja

    - REVIEWS OF MODERN PHYSICS - Rok 2009

    All our former experience with application of quantum theory seems to say that what is predicted by quantum formalism must occur in the laboratory. But the essence of quantum formalism-entanglement, recognized by Einstein, Podolsky, Rosen, and Schrödinger-waited over 70 years to enter laboratories as a new resource as real as energy. This holistic property of compound quantum systems, which involves nonclassical correlations between...

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  • Fractional problems with advanced arguments

    This paper concerns boundary fractional differential problems with advanced arguments. We investigate the existence of initial value problems when the initial point is given at the end point of an interval. Nonhomogeneous linear fractional differential equations are also studied. The existence of solutions for fractional differential equations with advanced arguments and with boundary value problems has been investigated by using...

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  • Quantum entanglement in time

    Publikacja

    In this paper we present a concept of quantum entanglement in time in a context of entangled consistent histories. These considerations are supported by presentation of necessary tools closely related to those acting on a space of spatial multipartite quantum states. We show that in similarity to monogamy of quantum entanglement in space, quantum entanglement in time is also endowed with this property for a particular history....

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  • On well-posedness of the first boundary-value problem within linear isotropic Toupin–Mindlin strain gradient elasticity and constraints for elastic moduli

    Within the linear Toupin–Mindlin strain gradient elasticity we discuss the well-posedness of the first boundary-value problem, that is, a boundary-value problem with Dirichlet-type boundary conditions on the whole boundary. For an isotropic material we formulate the necessary and sufficient conditions which guarantee existence and uniqueness of a weak solution. These conditions include strong ellipticity written in terms of higher-order...

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  • Technology convergence and digital divides. A country-level evidence for the period 2000–2010

    The paper, mostly empirical in nature, investigates issues on cross-national new information and communication technologies (ICTs) adoption patterns and growth directions. In the period of 2000–2010, a great number of countries underwent substantial changes on the field of ICTs implementation. Many of them made a great “jump” starting with almost “zero level” of ICTs adoption in the year 2000 and during the ten- year period were...

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  • Marta Kuc-Czarnecka dr

    Marta Kuc-Czarnecka jest zastępczynią kierownika Katedry Statystyki i Ekonomii na Wydziale Zarządzania i Ekonomii Politechniki Gdańskiej. Pełni również funkcję pełnomocniczki Dziekana ds. akredytacji AMBA. Jest współzałożycielką Rethinking Economics Gdańsk oraz członkinią Fundacji im. Edwarda Lipińskiego na rzecz promocji pluralizmu w naukach ekonomicznych. W latach 2018-2022 była ekspertką Europejskiej Fundacji na Rzecz Poprawy...

  • The cohomological span of LS-Conley index

    In this paper we introduce a new homotopy invariant – the cohomological span of LS-Conley index. We prove the theorems on the existence of critical points for a class of strongly indefinite functionals with the gradient of the form Lx+K(x), where L is bounded linear and K is completely continuous. We give examples of Hamiltonian systems for which our methods give better results than the Morse inequalities. We also give a formula...

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  • Invariant Measures for Uncountable Random Interval Homeomorphisms

    Publikacja

    A necessary and sufficient condition for the iterated function system { f (·, ω) | ω ∈ } with probability P to have exactly one invariant measure μ∗ with μ∗((0, 1)) = 1 is given. The main novelty lies in the fact that we only require the transformations f (·, ω) to be increasing homeomorphims, without any smoothness condition, nei- ther we impose conditions on the cardinality of . In particular, positive Lyapunov exponents conditions...

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  • Stability of softly switched multiregional dynamic output controllers with a static antiwindup filter: A discrete-time case

    This paper addresses the problem of model-based global stability analysis of discrete-time Takagi–Sugeno multiregional dynamic output controllers with static antiwindup filters. The presented analyses are reduced to the problem of a feasibility study of the Linear Matrix Inequalities (LMIs), derived based on Lyapunov stability theory. Two sets of LMIs are considered candidate derived from the classical common quadratic Lyapunov...

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  • A Conception of Pairwise Comparisons Model for Selection of Appropriate Body Surface Area Calculation Formula

    Publikacja

    Body surface area (BSA) may be computed using a variety of formulas, but the computed BSA differs from real BSA values for particular subjects. This is presented in the paper by computing BSA values for selected subject and comparing them to the real BSA value obtained with the use of a 3D body scanner. The results show inequalities in the relevant BSA computing formulas. Hence, there is a need to determine a method that will allow...

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  • Digitalization and digital skills development patterns. Evidence for European countries

    Publikacja

    - Rok 2023

    This chapter contextualizes the digitalization process and the digital skills concept. It discusses the very process of technology diffusion, emphasizing several unique features of digital technologies that make them globally available. Next, it turns to the digital skills concept, clarifying how and why they reshape the societal and economic landscape. It also briefly addresses the digital divide and skill-biased technological...

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  • GVC and wage dispersion. Firm-level evidence from employee-employer database

    Research background: Wage inequalities are still part of an interesting policy-oriented research area. Given the developments in international trade models (heterogeneity of firms) and increasing availability of micro-level data, more and more attention is paid to wage differences observed within and be-tween firms. Purpose of the article: The aim of the paper is to address the research gap concerning limited cross-country evidence...

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  • Inseparability criteria based on matrices of moments

    Publikacja

    - PHYSICAL REVIEW A - Rok 2009

    Inseparability criteria for continuous and discrete bipartite quantum states based on moments of annihilationand creation operators are studied by developing the idea of Shchukin-Vogel criterion Phys. Rev. Lett. 95,230502 2005. If a state is separable, then the corresponding matrix of moments is separable too. Thus, wederive generalized criteria based on the separability properties of the matrix of moments. In particular, acriterion...

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  • Universal and contextualized public services: Digital public service innovation framework

    Publikacja

    - GOVERNMENT INFORMATION QUARTERLY - Rok 2016

    In view of the rising social and economic inequalities, public service delivery should be both universal, i.e. independent of the recipients' social or economic status, and contextualized, i.e. able to compensate for different local needs and conditions. Reconciling both properties requires various forms of innovations, chief among them innovations in digital public services. Building upon the four-stage model underpinning the...

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  • Robustness of quantum-randomness expansion protocols in the presence of noise

    Publikacja

    - PHYSICAL REVIEW A - Rok 2013

    In this paper we investigate properties of several randomness generation protocols in the device independent framework. Using Bell-type inequalities it is possible to certify that the numbers generated by an untrusted device are indeed random. We present a selection of certificates which guarantee two bits of randomness for each run of the experiment in the noiseless case and require the parties to share a maximally entangled state....

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  • From unextendible product bases to genuinely entangled subspaces

    Publikacja

    - PHYSICAL REVIEW A - Rok 2018

    Unextendible product bases (UPBs) are interesting mathematical objects arising in composite Hilbert spaces that have found various applications in quantum information theory, for instance in a construction of bound entangled states or Bell inequalities without quantum violation. They are closely related to another important notion, completely entangled subspaces (CESs), which are those that do not contain any fully separable pure...

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  • The impact of ICTs on women’s economic empowerment

    Publikacja

    - Rok 2016

    It is widely argued that ICTs enable the inclusion of low-skilled and traditionally marginalized groups, such as women, people with disabilities, and workers at the base of the pyramid (BoP), in the labor market. In this paper, we investigate the determinants of female participation in the labor market in developing countries with a focus on the impact of the use of ICTs on female labor force participation. We conduct a panel study...

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  • Elemental and tight monogamy relations in nonsignaling theories

    Publikacja

    - PHYSICAL REVIEW A - Rok 2014

    Physical principles constrain the way nonlocal correlations can be distributed among distant parties. These constraints are usually expressed by monogamy relations that bound the amount of Bell inequality violation observed among a set of parties by the violation observed by a different set of parties. We prove here that much stronger monogamy relations are possible for nonsignaling correlations by showing how nonlocal correlations...

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  • The Impact of ICTs on Women’s Economic Empowerment

    Publikacja

    - Rok 2017

    It is widely argued that ICTs enable the inclusion of low-skilled and traditionally marginalized groups, such as women, people with disabilities, and workers at the base of the pyramid (BoP), in the labor market. In this paper, we investigate the determinants of female participation in the labor market in developing countries with a focus on the impact of the use of ICTs on female labor force participation. We conduct a panel study...

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  • Quantum Steering Inequality with Tolerance for Measurement-Setting Errors: Experimentally Feasible Signature of Unbounded Violation

    Publikacja

    - PHYSICAL REVIEW LETTERS - Rok 2017

    uantum steering is a relatively simple test for proving that the values of quantum-mechanical measurement outcomes come into being only in the act of measurement. By exploiting quantum correlations, Alice can influence — steer — Bob ’ s physical system in a way that is impossible in classical mechanics, as shown by the violation of steering inequalities. Demonstrating this and similar quantum effects for systems of increasing size,...

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  • Experimental bases for the rail track surface damage detection system

    Publikacja

    A diagnosis of rail surface is generally based on the classical method of direct assessment and track geometry measurements. Identification and qualification of inequality and damage on the surface rails is depend on the skills and experience person who conducting inspection. In times of increasing exploitation of railways, infrastructure managers decide to use systems supporting the assessment of technical condition of the railways....

  • GVC involvement and the gender wage gap: Micro -evidence on European countries

    We examine linkages between involvement in global value chains (GVCs) and gender wage inequalities. We use merged data from Structure of Earnings Survey and the World Input Output Database covering 18 European countries. We employ information on employees’ personal and company characteristics and a sectoral involvement in GVCs. In general, the wages of workers from sectors more involved in GVCs are lower. However, the relationship...

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  • Topological invariants for equivariant flows: Conley index and degree

    Publikacja

    - Rok 2010

    About forty years have passed since Charles Conley defined the homotopy index. Thereby, he generalized the ideas that go back to the calculus of variations work of Marston Morse. Within this long time the Conley index has proved to be a valuable tool in nonlinear analysis and dynamical systems. A significant development of applied methods has been observed. Later, the index theory has evolved to cover such areas as discrete dynamical...

  • Aleksandra Parteka dr hab. inż.

    About me: I am an associate professor and head of doctoral studies at the Faculty of Management and Economics, Gdansk University of Technology (GdanskTech, Poland).  I got my MSc degree in Economics from Gdansk University of Technology (2003) and Universita’ Politecnica delle Marche (2005), as well as MA degree in Contemporary European Studies from Sussex University (2006, with distinction).  I received my PhD in Economics...

  • Common Independence in Graphs

    Publikacja

    - Symmetry-Basel - Rok 2021

    Abstract: The cardinality of a largest independent set of G, denoted by α(G), is called the independence number of G. The independent domination number i(G) of a graph G is the cardinality of a smallest independent dominating set of G. We introduce the concept of the common independence number of a graph G, denoted by αc(G), as the greatest integer r such that every vertex of G belongs to some independent subset X of VG with |X|...

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  • The impact of internal and international migration on regional convergence in Poland

    Publikacja

    According to neoclassical theory, migration is expected to speed up the convergence process between countries (Barro, Sala-i-Martin 2004). The flow of labour from low-wage regions to high-wage regions should equalise payrolls. However, the impact of migration on convergence rates is unclear when the labour flow is heterogeneous. Moreover, the movement of labour towards wealthier areas depresses the demand for goods, services and...

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  • Quantum metrology: Heisenberg limit with bound entanglement

    Publikacja

    - PHYSICAL REVIEW A - Rok 2015

    Quantum entanglement may provide a huge boost in the precision of parameter estimation. However, quantum metrology seems to be extremely sensitive to noise in the probe state. There is an important still open question: What type of entanglement is useful as a resource in quantum metrology? Here we raise this question in relation to entanglement distillation. We provide a counterintuitive example of a family of bound entangled states...

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  • Hidden Tensor Structures

    Publikacja

    - ENTROPY - Rok 2024

    Any single system whose space of states is given by a separable Hilbert space is automatically equipped with infinitely many hidden tensor-like structures. This includes all quantum mechanical systems as well as classical field theories and classical signal analysis. Accordingly, systems as simple as a single one-dimensional harmonic oscillator, an infinite potential well, or a classical finite-amplitude signal of finite duration...

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  • Static Shape and Stress Control of Trusses with Optimum Time, Actuators and Actuation

    Traditional shape and stress control of structures use many actuators and require enormous time to find reasonable solutions that need designers to input specific target displacement and stress. This study employs a linear technique to static shape and stress control of pin-jointed assemblies as a theoretical advancement to prior works and provides a comparative analysis against previously established works. The study evaluates...

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  • Zmiany udziału pracy w dochodzie narodowym a nierówności społeczne na przykładzie państw Grupy Wyszehradzkiej

    Publikacja

    Dokonująca się liberalizacja handlu, rynków pieniężnych i kapitałowych, umiędzynaro-dowienie produkcji oraz szybkie i szerokie wykorzystanie technologii stanowiące siłę napędową globalizacji włączyły, transformującą się gospodarkę polską w ten proces. Globalizacja określa rozprzestrzenianie się charakterystycznych trendów światowej ekonomii, polityki, życia społecznego i kultury na całym świecie, niezależnie od stopnia zaawansowania...

  • STILL ‘FEW, SLOW AND LOW’? ON THE FEMALE DIMENSION OF TECHNOLOGY, LABOUR MARKETS AND ECONOMIC ACTIVITY: EVIDENCE FOR THE PERIOD OF 1990-2017

    Publikacja

    The known in empirical economics question ‘Why so Few? Why so Slow? Why so Low?’ refers here to the persistently small number of women involved in innovative activities, the slowness of change in the inequalities between women and men in these fields, and women’s continuing lower rank in business and academic positions. In developing countries, women`s labour and entrepreneurial activity remains an ‘untapped resource’ for economic...

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  • Arithmetic Loophole in Bell's Theorem: Overlooked Threat to Entangled-State Quantum Cryptography

    Publikacja

    Bell’s theorem is supposed to exclude all local hidden-variable models of quantum correlations. However,an explicit counterexample shows that a new class of local realistic models, based on generalized arith-metic and calculus, can exactly reconstruct rotationally symmetric quantum probabilities typical oftwo-electron singlet states. Observable probabilities are consistent with the usual arithmetic employedby macroscopic observers...

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  • Implementing Sustainable Development Goals with Digital Government – Aspiration-capacity gap

    Sustainable Development Goals (SDGs) represent a commitment by all United Nations Member States to pursue development efforts, including ending poverty and hunger, promoting well-being and education, reducing inequalities, fostering peace, and protecting the planet. Member States and their governments are supposed to take ownership of the SDGs, strengthen the implementation means, and improve public governance as both the means...

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  • Certified domination

    Publikacja

    Imagine that we are given a set D of officials and a set W of civils. For each civil x ∈ W, there must be an official v ∈ D that can serve x, and whenever any such v is serving x, there must also be another civil w ∈ W that observes v, that is, w may act as a kind of witness, to avoid any abuse from v. What is the minimum number of officials to guarantee such a service, assuming a given social network? In this paper, we introduce...

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  • On the hat problem on a graph

    Publikacja

    The topic of this paper is the hat problem in which each of n players is uniformly and independently fitted with a blue or red hat. Then everybody can try to guess simultaneously his own hat color by looking at the hat colors of the other players. The team wins if at least one player guesses his hat color correctly, and no one guesses his hat color wrong; otherwise the team loses. The aim is to maximize the probability of winning....

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  • Hybrid no-signaling-quantum correlations

    Publikacja

    - NEW JOURNAL OF PHYSICS - Rok 2022

    Fundamental investigations in non-locality have shown that while the no-signaling principle alone is not sufficient to single out the set of quantum non-local correlations, local quantum mechanics and no-signaling together exactly reproduce the set of quantum correlations in the two-party Bell scenario. Here, we introduce and study an intermediate hybrid no-signaling quantum set of non-local correlations that we term HNSQ in the...

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  • Advanced Control With PLC—Code Generator for aMPC Controller Implementation and Cooperation With External Computational Server for Dealing With Multidimensionality, Constraints and LMI Based Robustness

    The manufacturers of Programmable Logic Controllers (PLC) usually equip their products with extremely simple control algorithms, such as PID and on-off regulators. However, modern PLCs have much more efficient processors and extensive memory, which enables implementing more sophisticated controllers. The paper discusses issues related to the implementation of matrix operations, time limitations for code execution within one PLC...

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  • Sprawiedliwość agrarna

    prawiedliwość agrarna została napisana z intencją zreformowania stosunków społeczno-politycznych. Tekst opiera się na założeniu wywodzącym się z tradycji prawnonaturalnej, które brzmi, iż pierwotnie każdy był współwłaścicielem powierzchni Ziemi. Powstanie prywatnej własności ziemskiej (czyli, eo ipso, wywłaszczenie większości ludzi) należy zakwalifikować jako akt bezprawia, kumulujący się w historycznie nawarstwionych nierównościach...

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  • Amplifying the Randomness of Weak Sources Correlated With Devices

    Publikacja

    - IEEE TRANSACTIONS ON INFORMATION THEORY - Rok 2017

    The problem of device-independent randomness amplification against no-signaling adversaries has so far been studied under the assumption that the weak source of randomness is uncorrelated with the (quantum) devices used in the amplification procedure. In this paper, we relax this assumption, and reconsider the original protocol of Colbeck and Renner using a Santha-Vazirani (SV) source. To do so, we introduce an SV-like condition...

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  • On symmetric extendibility of quantum states and its applications

    Publikacja

    - Rok 2017

    This dissertation is focused on analysis of the symmetric extendibility of quantum states and its applications in the quantum information theory, with special attention paid to the area of quantum entanglement distillation, quantum channels theory, quantum security, and monogamy of quantum entanglement in time. We analyze geometry of the set of symmetric extendible states, i.e. such states that possess symmetric extensions and...

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  • The impact of mass-media campaigns on physical activity: a review of reviews through a policy lens

    Publikacja
    • N. d. Braver
    • E. García Bengoechea
    • S. Messing
    • L. Kelly
    • J. L. Schoonmade
    • K. Volf
    • J. Żukowska
    • P. Gelius
    • S. Forberger
    • C. B. Woods
    • J. Lakerveld

    - EUROPEAN JOURNAL OF PUBLIC HEALTH - Rok 2022

    Background This review of reviews aimed to: (1) summarize the evidence from published reviews on the effectiveness of mass-media campaigns to promote physical activity (PA) or PA-related determinants (intermediate psychological and proximal outcomes) and (2) to identify policy-relevant recommendations related to successful PA campaigns. Methods An extensive literature search was performed on 1 March 2021. Reviews that evaluated...

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  • Advancing the evidence base for public policies impacting on dietary behaviour, physical activity and sedentary behaviour in Europe: The Policy Evaluation Network promoting a multidisciplinary approach

    Publikacja
    • J. Lakerveld
    • C. Woods
    • A. Hebestreit
    • H. Brenner
    • M. Flechtner-Mors
    • J. M. Harrington
    • C. B. Kamphuis
    • M. Laxy
    • A. Luszczynska
    • M. Mazzocchi... i 10 innych

    - FOOD POLICY - Rok 2020

    Non-communicable diseases (NCDs) are the leading cause of global mortality. As the social and economic costs of NCDs have escalated, action is needed to tackle important causes of many NCD’s: low physical activity levels and unhealthy dietary behaviours. As these behaviours are driven by upstream factors, successful policy interventions are required that encourage healthy dietary behaviours, improve physical activity levels and...

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  • Marek Czachor prof. dr hab.

  • Igor Niemczyk

    Osoby