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EN
The article describes connections between collage as a picture, musical collage and literary one. The rise of the new artistic technique is a breakthrough in the whole art of the 20th century. The violent technological development at the turn of the 19th and 20th century caused its appearance. In the first part there are relations between the word and the picture, which contribute to the collage practice. The second part describes the influence of the reality and the city space on the changes of the contemporary art. The third part in turn is devoted to new media processing words and pictures as well as to the uniqueness of words featuring in the collage composition.
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We consider the Z. Szmydt problem for the hyperbolic functional differential equation. We prove a theorem on existence of a unique classical solution and the Carathéodory solution of the hyperbolic equation.
EN
The article is devoted to the analysis of the function of objects in Miron Bialoszewski's prose texts. It shows an interest in every day objects as a characteristic feature of art in second half of 20th century. As a result, ready-made, amballage, assamblage and environment become the contexts of the analyzed texts. Objects create collages in the texts' descriptive layer: they are made accidentally and can be sound or visual. They are born around the narrator, since the presented literary world was identified with the space of living. The biographical element introduces another argument in favor of 'poor aesthetics' or 'attic aesthetics'. It proves to be the project of social coexistence based on the rule of voluntary giving and on recycling seen as a way of circulation of things. The attitude to objects stems from the post-war experience of the lack of various things. Objects in Bialoszewski's texts are treated as cultural signs
EN
This paper is devoted to the study of the maximum principle for the elliptic equation with a deviated argument. We will consider viscosity solutions of this equation.
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We deal with monotone iterative method for the Darboux problem for the system of hyperbolic partial functional-differential equations. [zob. pełny tekst: http://www.staff.amu.edu.pl/~commath/papers/482/4825.pdf]
EN
The 'ephemera of memory' comprise a category constitutive for the works of Leopold Buczkowski. Punctualistic, aleatoric non-fiction constructions create museum space in which the author tries to revive 'Rusin words-sounds', i.e. the living, dialogical and multicultural vernacular of pre-war Podolia. His stories, however, progress more in time than in space by creating simultaneously overlapping strata of myriad versions of events, myths, and imagery, enrooted in collective imagination. The homophonic quality of the ephemera corresponds to the fleeting nature of human memory. With attempts at capturing living speech and music as his point of departure, Buczkowski arrived at decontextualised records or even written down conversation when, for instance, he creates narration composed of quotations from Polish-French phrase-books. Only decontextualisation, characteristic for the written word, is regarded by the author as a tool suitable for building a memory museum; he thus endeavours to create an archive of forms no longer existent after the WW II, in this way salvaging a dying world and chronotypes doomed to oblivion. By setting up an archive of past forms of culture and art Buczkowski also conducts an in-depth analysis of modern culture based on the bourgeois ethos and writings which he holds responsible for the catastrophe of the WW II. In the 'museum of memory' writing has assumed the shape of archaeology, i.e. the extraction of the relics and forms of a vanishing world from oblivion. This is the reason why narration brings to mind a collection. It remains specific because its medium is the printed word. Just as in collections of objects, it constitutes an attempt at reaching, via material (here: the letter, the visible sign of writing), that which is invisible and impalpable -forms of a world which perished in WW II. The instruments applied by the author are close to the techniques of 20th-century art which also frequently turns into archaeology by gathering actual objects and the debris of contemporary civilisation. Prose by Buczkowski resembles a visual art collage, an assemblage executed with the help of the recycling technique.
EN
Many Swedes are deeply interested in preserving tropical forests, but they are not aware of the threat to the most valuable forested areas in their own country. Mountain forests in Northern Sweden with their especially valuable original vegetation are endangered. The profits from the exploitation of mountain forest are very small, but imposing any constraints on forest management in Sweden is not easy as it is still the main source of national income.
PL
Wielu Szwedów jest żywo zainteresowanych ratowaniem lasów tropikalnych, a nie zdaje sobie sprawy z tego, że zagrożone są najcenniejsze obszary leśne ich własnego kraju. Chodzi o lasy górskie na północy, szczególnie cenne ze względu na ich pierwotny charakter. Ich eksploatacja jest bardzo mało opłacalna, jednak wprowadzenie jakichkolwiek przepisów ograniczających gospodarkę leśną nie jest w Szwecji łatwe, gdyż jest to główne źródło dochodu narodowego.
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Content available remote Second order evolution differential functional equations with infinite delay
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EN
We consider a second order semilinear functional evolution equation with infinite delay in a Banach space. We prove the existence of mild solutions for this equation using the measure of noncompactness technique and the Schauder fixed point theorem.
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Content available remote Sieci Wi-Fi – zabezpieczenia i metody ataków
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PL
Sieci Wi-Fi są systemem komunikacji zaprojektowanym jako alternatywa lub uzupełnienie sieci tradycyjnej kablowej. Sieci bezprzewodowe mają bardzo szerokie zastosowanie. Wykorzystuje się je m.in. do projektowania sieci domowych oraz firmowych. Najprostszą i najczęściej stosowaną metodą zabezpieczenia sieci jest protokół WPA 2 Personal. Od początku istnienia sieci bezprzewodowych trwa prawdziwy wyścig zbrojeń. Nowe opracowania protokołów szybko stają się nieaktualne. Hakerzy odkrywają kolejne metody ataków i wskazują wady istniejących rozwiązań. Przeprowadzenie ataku na sieć na ogół poprzedzone jest zbadaniem środowiska obranego celu. Nie wszystkie ataki jednak związane są z wykorzystaniem sprzętu komputerowego, w niektórych przypadkach łatwiejszym celem są użytkownicy sieci.
EN
Wi-Fi is a system of communication designed with an alternative or a complement for traditional cable network. Wireless networks are very common in use. They are used for example to project a home network or a business network. The easiest and the most popular method of network security is a WPA 2 Personal protocol. From the very beginning, there have been a real arms race. New coverages of the protocols are getting very quickly not actual. Hackers discover new methods of an attack and they show disadvantages of existing solutions. Performing an attack against some network is in general preceded by studying an environment of the aim. Not all attacks are connected with using a hardware. In some cases, users of a network are the easier aim.
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