This paper presents a novel error-feedback practical solution for real-time implementation of nonlinear output regulation. Sufficient and necessary conditions for both state- and error-feedback output regulation have been established for linear and nonlinear systems several decades ago. In their most general form, these solutions require solving a set of nonlinear partial differential equations, which may be hard or even impossible to solve analytically. In recent years, a methodology for dynamic calculation of the mappings required for state-feedback regulation has been put forward; following the latter, an error-feedback extension is hereby provided which, when combined with design conditions in the form of linear matrix inequalities, becomes suitable for real-time setups. Real-time results are presented for a nonlinear twin rotor MIMO system. Issues concerning the implementation as well as the solutions adopted, are discussed.
The existence of a positive solution for the generalized predator-prey model for two species $$ \begin{gathered} \Delta u + u(a + g(u,v)) = 0\quad \mbox {in}\ \Omega ,\\ \Delta v + v(d + h(u,v)) = 0\quad \mbox {in} \ \Omega ,\\ u = v = 0\quad \mbox {on}\ \partial \Omega , \end{gathered} $$ are investigated. The techniques used in the paper are the elliptic theory, upper-lower solutions, maximum principles and spectrum estimates. The arguments also rely on some detailed properties of the solution of logistic equations.
Th e article reads the Czech literary canon during the period from 1948 to 1989 not from a consciously feminist standpoint, but from a gender perspective. Following works of Michel Foucault, Judith Butler, and Wendy Brown, the article’s primary focus is on fi ction written by dissent and alternative writers, with an emphasis on their role in what the author calls “dispositives of silence,” consisting of the discursive emergence of silencing and the aff ective dimension of “injurious attachments.” Th e article holds that while the dissident and alternative literary scene’s opposition to the then-offi cial regime made the need for political opposition clearly visible to it, other issues, such as the drive towards gender equality, became invisible to it, which represents a case of injurious attachments. In the article’s interpretative part, it reads literary works by writers Iva Pekárková, Tereza Boučková, and Pavel Kohout as examples that illustrate the issue of injurious attachments. In the article’s fi nal part, it supplements its thesis on dissident and alternative literature of the 1948–1989 period with a brief sketch of the literary evolution during the period, and it presents an overview of fi ve major – and partly contradictory – tendencies that can be identifi ed in the four decades in question.
In this survey we consider superlinear parabolic problems which possess both blowing-up and global solutions and we study a priori estimates of global solutions.
We present an approach for probabilistic contour prediction within the framework of an object tracking system. We combine level-set methods for image segmentation with optical flow estimations based on probability distribution functions (pdfs) calculated at each image position. Unlike most recent level-set methods that consider exclusively the sign of the level-set function to determine an object and its background, we introduce a novel interpretation of the value of the level-set function that reflects the confidence in the contour. To this end, in a sequence of consecutive images, the contour of an object is transformed according to the optical flow estimation and used as the initial object hypothesis in the following image. The values of the initial level-set function are set according to the optical flow pdfs and thus provide an opportunity to incorporate the uncertainties of the optical flow estimation in the object contour prediction.
The aim of this paper is to propose a new approach to probability density function (PDF) estimation which is based on the fuzzy transform (F-transform) introduced by Perfilieva in \cite{Perfilieva:FSS06}. Firstly, a smoothing filter based on the combination of the discrete direct and continuous inverse F-transform is introduced and some of the basic properties are investigated. Next, an alternative approach to PDF estimation based on the proposed smoothing filter is established and compared with the most used method of Parzen windows. Such an approach can be of a great value mainly when dealing with financial data, i. e. large samples of observations.
In [6] we proved that tlie monoidal t-norm logic MTL introduced by
Esteva and Godo in [4] is the logic of left-continuons t-norms and their residuals. Recently, the Ruinenian school, P. Hájek and others investigated in deep noncommutative t-norms. Tlins it is natural to look for the logic of left-continuons non-commutative t-norms. This is precisely what we do in this paper. The proof is a combination of the inethod used in [6] and of results by .J. Kühn in [13] and by P. Hájek in [9].
The scholarly attention paid to Anna Katharina SweertsSporck has so far focused on the phase of her youth when she was engaged in translating books chosen by her father count Franz Anton Sporck for publishing. The article explores her interest in the book culture in the later stage of her life after her forced entrance into marriage in 1712. Anna Katharina initiated a large program of publishing and spreading devotional literature. The project was realized in cooperation with the Servite friar Wilhelm M. Löhrer and it aimed to cultivate internal, affective piety as a newly appraised type of religiosity which was increasingly popular across the confessional boundaries in the eighteenth century., Veronika Čapská., and Obsahuje bibliografické odkazy
Let \Omega \subset {{\Bbb C}^n} be a bounded, simply connected \mathbb{C} -convex domain. Let \alpha \in \mathbb{Z}_{+}^{n} and let f be a function on Ω which is separately {C^{2{\alpha _j} - 1}} -smooth with respect to zj (by which we mean jointly {C^{2{\alpha _j} - 1}} -smooth with respect to Rezj, Imzj). If f is α-analytic on Ω\f−1(0), then f is α-analytic on Ω. The result is well-known for the case a_{i}=1, 1\leqslant i\leqslant n even when f a priori is only known to be continuous., Abtin Daghighi, Frank Wikström., and Obsahuje seznam literatury