440 research outputs found
Tilting/tracking system for solar devices, U.S. Patent 8,481,906
No full textA tracking system is provided for a roof-mounted solar array. The system includes a sensor mechanism for sensing an orientation of the sun relative to the solar array, and a controller connected to the sensor mechanism that generates a signal that represents an optimal tilt angle of the solar array relative to the orientation of the sun. An actuator connected to the controller receives the signal from the controller and adjusts the tilt angle of the solar array in response to the received signal
My homeland is divided by the wall...
No full textNa pokładzie „Głosu Prawa” sędzia Arkadiusz Krupa pojawił się wraz z zeszytem numer 5 – swoimi ilustracjami sygnowanymi „Ślepym Okiem Temidy”, którymi odtąd okrasza i komentuje treści tekstowe. Tym razem witamy Pana Sędziego jako felietonistę. Pierwszy felieton jest komentarzem do rzeczywistości, ale zakorzenionym we wspomnieniach z dzieciństwa.Judge Arkadiusz Krupa appeared on the pages of The Voice of Law in the fifth volume – with his illustrations “The Blind Eye of Themis” which he now entices and interprets. This time we welcome the judge as a columnist. The first column is a commentary on current events, but it is also rooted in childhood memories of the author
Dissimilation : overdetermination of postcolonial memory in Rabih Mroué’s oeuvre
No full textIn the article Dissimilation. Overdetermination of Postcolonial Memory in Rabih Mroué’s Oeuvre Arkadiusz Półtorak discusses three works by Rabih Mroué: the photo-collage series Diary of a Leap Year and the performances Three Posters (2000) and So Little Time (2017). The author scrutinizes Mroué’s references to Lebanon’s modern history and - drawing upon a cultural analysis of the chosen works - proves that instrumentalization of collective memory discourses is one of the pivotal themes in the artist’s oeuvre. The author posits that Rabih Mroué reveals the arbitrary quality of the past’s representations through defamiliarization (ostranenie), and that his method bears an affinity to Derrida’s notions of deconstruction and decolonization
Pedagogical dimension of sport in the light of its socio-cultural conditions
No full textKaźmierczak Arkadiusz. Pedagogical dimension of sport in the light of its socio-cultural conditions. Journal of Education, Health and Sport. 2018;8(9):449-458. eISNN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.1403850
http://ojs.ukw.edu.pl/index.php/johs/article/view/5867
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part b item 1223 (26/01/2017).
1223 Journal of Education, Health and Sport eissn 2391-8306 7
© The Author(s) 2018;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 02.08.2018. Revised: 18.08.2018. Accepted: 24.08.2018.
Pedagogical dimension of sport in the light of its socio-cultural conditions
Arkadiusz Kaźmierczak
Faculty of Educational Sciences of the University of Lodz
Summary
The contemporary existence of sport in social discourse is not limited only to the area of sports competition, results and records or stadiums, which are the arena of struggle for athletes. Identified as a form of the individual's search for its existence and the way of exceeding human potential, it has become the subject of constant reflection and research inspiration. Perceived as an interdisciplinary phenomenon with a rich axiological potential in many scientific studies, it is identified as a field of cultural, social, economic, recreational, political, ecological and educational scope.
Keywords; sport, upbringing through sport, social and cultural dimension of spor
The influence of geography and clustering of foreign subsidiaries on the economic sustainability and competitiveness of the regions in Poland - FDI location patterns as regional economic development vehicle
No full textThe main goals of this research are to analyze and identify the location patterns of foreign direct investment (FDI) across regions in Poland and further to determine the supporting motives of foreign companies to locate in the chosen regions across the country. Finally this study also identifies the leading foreign firms present in Poland and determines whether the presence of the leading firms in a region has an effect on the location choice of the small and medium foreign firms from the same industry present in Poland. For that purpose a revealed location advantage (RLA) model is proposed to determine relative industrial and country of origin locational concentration of foreign firms across the polish regions. Next, statistical analysis between RLA index measures for the degree of industrial specialization (across industries) in each region on the one hand and on the other relevant local economic factors such as: market size, labor pool and skill, amount of FDI, regional GDP, and the investment in R&D is used to determine the relationships that support the attraction of foreign firms to particular regions. Further analysis is undertaken of the attraction or congestion (deterrent) effect of industry leading firms on small and medium foreign companies locating in the equivalent regions. The results of this research show that foreign firms investing in Poland choose their location predominantly based on industrial agglomeration strengths of a region rather than country of origin attraction. The industrial agglomerations of foreign firms certain in specific regions seem to be attracted by the availability of labor and local market size for production related industries, while the availability of skilled labor and investment in R&D matters more in the service and value added production oriented activity. The presence of leading firms within their industry in regions with the lowest concentration of FDI seem to essentially be a deterrent for new firms in the same industry. The regions with, multiple leading investors, 3 or more, with the exception of the Mazowieckie region, are generally stronger or specialized regions, that seem to have the breadth of local resources needed to attract more foreign firms in the same industry as the leading firms into the region. In other words, stronger regions have a higher capacity to accommodate investment and seem to be able to attract additional firms regardless of their size.Ph. D.Includes bibliographical referencesIncludes vitaby Arkadiusz Mironk
Recenzja książki Petera Brooka «Wolność i łaska: Rozważania o Szekspirze»
No full textA book review of the Polish translation of The Quality of Mercy: Reflections on Shakespeare by Peter Brook. The reviewer thoroughly, chapter after chapter, follows the director’s argument, analysing his reflexions. He emphasises the key questions and problems posed by Brook, who has grappled with Shakespeare’s work and confronted it with real life, the political and social reality, and most of all, with theatrical practice for the last seventy years. The conclusions reached by the author by the end of the book, as brilliant and amazing as they are in their profoundness and simplicity, serve Arkadiusz Rogoziński as a starting point for his own doubts and questions. The review ends with the questions that open up room for further discussion: Is it possible for the theatre of the Christian world to have some other meaning than that invented by the ancient Greeks? Will freedom, mercy, and quality—the Shakespearean terms analysed by Brook in detail—ever be able to replace pity and fear
Recepcja współczesnego kina rosyjskiego w Polsce
No full textRECEPTION OF CONTEMPORARY RUSSIAN CINEMA IN POLANDThis article is an attempt to analyse the problem of reception of contemporary Russian cinema in Poland. The author, appealing to the various types of statistical compositions, points to several basic reasons of the small interest in Russian cinematography in our country. “Political” problems are the first reason — especially in the 1990s resulting in some aversion to the whole Russian culture. The second reason is of an “artistic” nature — the collapse of film production in Russia led to the fall of the quality of Russian production, which resulted in, for example, less interest in it of Polish critics and film scholars. The third reason is of an “economic” nature and is connected with the domination of American films, pushing productions made in other countries out of markets.Translated by Arkadiusz LewickiRECEPTION OF CONTEMPORARY RUSSIAN CINEMA IN POLANDThis article is an attempt to analyse the problem of reception of contemporary Russian cinema in Poland. The author, appealing to the various types of statistical compositions, points to several basic reasons of the small interest in Russian cinematography in our country. “Political” problems are the first reason — especially in the 1990s resulting in some aversion to the whole Russian culture. The second reason is of an “artistic” nature — the collapse of film production in Russia led to the fall of the quality of Russian production, which resulted in, for example, less interest in it of Polish critics and film scholars. The third reason is of an “economic” nature and is connected with the domination of American films, pushing productions made in other countries out of markets.Translated by Arkadiusz Lewick
Around the book of Arkadiusz Zawadzki “Economy of Southern Podlasie in 1918-1939”
No full textIn 2014 a book by dr Arkadiusz Zawadzki (an assistant lecturer at the Archive Studies Unit, Department of History and International Relations, Siedlce University of Natural Sciences and Humanities), entitled Gospodarka Południowego Podlasia w latach 1918-1939 [The Economy of Southern Podlasie 1918-1939]. The publication, as mentioned by its very author in the Introduction, is an extended version of his doctoral thesis written under the guidance of dr. hab, prof. UPH Józef Piłatowicz, and defended in 2013 at the Faculty of Humanities UNS Siedlce. It is worth underlining that it pioneering work - Arkadiusz Zawadzki attempted to write an economic monograph on the economics of Southern Podlasie whose chronological framework covers the 1920s and 1930s in the territory of nine, and from 1932 eight northern counties [powiat] of Lublin Province. According to the Auther the objective of the monograph is to answer the question: What was the position of the Southern Podlasie region in the economic system of the Second Polish Republic, and to consider the question whether it was a modern or a backward region in terms of economy, and whether one can talk about progress in the 21 years of independence. In the Conclusion the Author raises another question: Can one, therefore, in the light of the information provided herein, answer the question about the economic development of the region? The book is an academic publication and it must not be omitted while discussing the economic issues. For many years a book concerning a similar topic, which is not easy to discuss, had not been written. Arkadiusz Zawadzki commands recognition for his efforts put in the creation of such a monograph. The book is interesting to read; it is intended mainly for historians dealing with the economy of the Second Polish Republic, regional culture specialist, and for the history lovers; reading it is not easy.W 2014 r. ukazała się książka autorstwa dr. Arkadiusza Zawadzkiego (asystenta w Zakładzie Archiwistyki w Instytucie Historii i Stosunków Międzynarodowych Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach) pt. Gospodarka Południowego Podlasia w latach 1918–1939. Publikacja, jak wspomina sam Autor we Wstępie, jest rozszerzoną wersją rozprawy doktorskiej napisaną pod kierunkiem naukowym dr. hab. prof. UPH Józefa Piłatowicza i obronionej w 2013 r. na Wydziale Humanistycznym UPH w Siedlcach. Warto zaznaczyć, iż jest to pionierska praca – Arkadiusz Zawadzki pokusił się o napisanie monografii gospodarczej Południowego Podlasia, której ramy chronologiczne obejmują lata 20. i 30. XX w. na obszarze dziewięciu, a od 1932 r. ośmiu północnych powiatów województwa lubelskiego. Zdaniem Autora, zasadniczym celem monografii jest odpowiedź na pytanie: Jaką pozycję zajmował region Południowego Podlasia w systemie gospodarczym II Rzeczypospolitej oraz rozważenie kwestii, czy był to region nowoczesny, czy też zacofany pod względem ekonomicznym i czy w ciągu 21 lat niepodległości można mówić o postępie? W Zakończeniu Autor stawia kolejne pytanie: Czy w takim razie, w świetle przedstawionych w niniejszej pracy informacji, można odpowiedzieć na pytanie o poziom rozwoju ekonomicznego regionu? Książka jest publikacją naukową i przy omawianiu zagadnień z gospodarki nie można jej w żaden sposób pominąć. Od lat nie została wydana książka o podobnym, nie łatwym do opracowania temacie – Arkadiusz Zawadzki zasługuje na uznanie za włożony trud w stworzenie takiej monografii. Książka jest ciekawą lekturą, przeznaczoną głównie dla historyków zajmujących się gospodarką II Rzeczypospolitej, regionalistów, a także pasjonatów historii, jej lektura nie należy do łatwych
Metoda pomiaru strumieni neutronów z reakcji syntezy w reaktorach termojądrowych poprzez detekcję neutronów opóźnionych z aktywacji materiałów rozszczepialnych. Projekt i budowa systemu pomiarowego
No full textPomiary neutronowe wykonywane przy urządzeniach służących do realizacji reakcji syntezy jądrowej deuter-deuter lub deuter-tryt w plazmie wysokotemperaturowej są jednymi z najważniejszych diagnostyk pozwalających na określanie parametrów plazmy i zachodzących w niej reakcji. Stwierdzenie to jest słuszne zarówno dla istniejących i budowanych tokamaków badawczych (np. JET, ITER), jak i dla przyszłościowych reaktorów komercyjnych, które będą służyć do produkcji energii elektrycznej. Te ostatnie będą wyposażane w minimalną, niezbędną liczbę urządzeń pomiarowych, wśród których dalej wiodącą rolę będą pełniły systemy detekcji neutronów. Z tego powodu są prowadzone intensywne badania nad rozwojem systemów do pomiarów neutronów, dedykowanych zwłaszcza dla dużych, czyli produkujących bardzo wysokie strumienie neutronów, urządzeń fuzyjnych.
Rejestracja bardzo wysokich częstości zliczeń neutronów stanowi dużą trudność pomiarową. Jednym ze sposobów ominięcia tego problemu może być pomiar pośredni: w wysokim strumieniu neutronów aktywuje się tarczę z materiału rozszczepialnego. W wyniku reakcji rozszczepienia pojawia się niewielka liczba tzw. neutronów opóźnionych. Zmierzony strumień neutronów opóźnionych można następnie wykorzystać do wyliczenia pierwotnego strumienia neutronów z plazmy.
W niniejszej pracy zostało przedstawione nowe podejście do metody pomiaru strumieni neutronów z reakcji syntezy termojądrowej poprzez detekcję neutronów opóźnionych. Zaproponowane rozwiązanie pozwala na rejestrację nie tylko ogólnej liczby emitowanych neutronów opóźnionych z zaaktywowanej tarczy, ale również na rejestrację krzywej ich zaniku w czasie. Wyznaczenie przebiegu krzywej zaniku strumienia neutronów opóźnionych pozwala na większą swobodę doboru parametrów do wyznaczenia strumienia neutronów generowanego w plazmie z lepszą precyzją.
Ogólnym celem niniejszej pracy było zaprojektowanie oraz budowa dedykowanego urządzenia do pomiaru wysokich strumieni neutronów prędkich, powyżej 107 n/cm2s, generowanych w plazmie wysokotemperaturowej (deuterowej lub deuterowo-trytowej), z wykorzystaniem metody aktywacyjnej z zastosowaniem tarcz z materiałów rozszczepialnych. W ramach pracy został zaprojektowany i wykonany układ pomiarowy oraz stanowisko pomiarowe, zoptymalizowane do rejestracji krzywej zaniku strumienia neutronów opóźnionych z rozszczepialnej tarczy aktywacyjnej.
Praca zawiera projekt, opis konstrukcji całego urządzenia, optymalizację jego parametrów pod kątem wyboru materiału rozszczepialnego stanowiącego tarczę aktywacyjną, ustalenia rodzaju i geometrii materiałów osłonowych stanowiska pomiarowego oraz typu, liczby i rozmieszczenia detektorów, a także propozycję systemu pomiarowego użytego do zliczania i wyznaczania krzywej zaniku neutronów opóźnionych. W celu optymalizacji układów posłużono się komputerowymi metodami obliczeniowymi wykorzystującymi kod Monte Carlo N-Particle (MCNP) Transport Code. Dla wybranych materiałów rozszczepialnych zostały zaproponowane kształty i rozmiary próbek, które
stanowią tarcze aktywacyjne. Do pomiaru neutronów opóźnionych z zaaktywowanej tarczy zaproponowano zestaw 12 detektorów helowych z kompletnym systemem elektroniki pomiarowej. Cały układ umieszczony jest w zoptymalizowanym układzie osłon zapewniających maksymalny stosunek sygnału do tła.
Skonstruowane urządzenie o akronimie DET-12 zostało przetestowane pod kątem poprawności działania. Została wykonana testowa kalibracja w warunkach laboratoryjnych przy użyciu źródła neutronowego 252Cf w celu oszacowania wydajności i progu detekcji urządzenia DET-12. Wykorzystano również modelowanie komputerowe dla poszerzenia zakresu testów, symulując warunki pracy urządzenia w polu neutronów charakterystycznym dla tokamaka. Dla urządzenia zostały także określone wymagania co do sposobu rejestracji danych pomiarowych (zliczeń w kanałach czasowych) oraz dalszego ich przetwarzania w celu wyliczenia wartości pierwotnych strumieni neutronów naświetlających tarcze z materiałami rozszczepialnymi.Neutron measurements carried out at devices using nuclear deuterium-deuterium or deuterium-tritium fusion reactions in high-temperature plasma are one of the most important diagnostics allowing to determine plasma parameters and reactions occurring in it. This statement is valid for both: existing and constructed research tokamaks (e.g. JET, ITER) as well as for future commercial reactors that will be used to produce electricity. The last one will be equipped with the minimum, necessary number of measuring devices, among which neutron detection systems will play the leading role. For this reason, intensive research is being carried out on the development of neutron measurement systems, dedicated especially to large, producing very high neutron fluxes, fusion devices.
The registration of very high frequencies of neutron counts is a great measurement difficulty. One of the ways to overcome this problem may be indirect measurement: the high neutron flux activates a target of fissile material. As a result of the fission reaction, a small number of so-called delayed neutrons is generated. The measured delayed neutron flux can then be used to calculate the original neutron flux from the plasma.
This paper presents a new approach to the method of measuring neutron fluxes from thermonuclear fusion reactions by detecting delayed neutrons. The proposed solution allows the registration not only the total number of generated delayed neutrons from the activated target, but also the registration of their time decay curve. Determining the time decay curve delayed neutrons allows more freedom in selecting parameters for determining the neutron flux generated in the plasma with better precision.
The aim of this work was to design and build a dedicated device for measuring high fast neutron fluxes (above 107 n/cm2s) generated in high-temperature plasma (deuterium or deuterium-tritium) using the activation method with the fissile targets. As part of the work, a measurement system and a measuring chamber were designed, optimized and made for the detection and recording the time decay curve of delayed neutrons from a fissionable activation targets.
The work includes a design, description of the structure of the device, optimization of its parameters, selection of fissile materials constituting the activation targets, determining the type and geometry of shielding materials of the DET-12 device, number and arrangement of detectors, and the proposed measuring system used to count and determine of the decay curve delayed neutrons. In order to optimize the systems, computational methods using the Monte Carlo N-Particle code (MCNP) Transport Code were used. For selected fissile materials, shapes and sizes of samples have been proposed. For the measurement of delayed neutrons from the activated targets, a set of 12 helium detectors with specific electronics was proposed. The whole system is placed in an optimized shield system ensuring maximum signal to background ratio.
The constructed device with the DET-12 acronym was tested for correct operation. The calibration test was carried out in laboratory conditions using a 252Cf neutron source to estimate the efficiency of DET-12 device and its measurement range. Computer modeling
was also used to extend the scope of tests, simulating the working conditions of the device in the neutron field characteristic for the tokamaks. The device has also specified requirements for the method of recording measurement data (counts in time channels) and further processing in order to calculate the values of the original neutron fluxes irradiating targets with fissile materials.6
Prosta droga do melancholii. O antyutopii 451 stopni Fahrenheita Raya Bradbury’ego i jej filmowych adaptacjach
No full textLewicki Arkadiusz, Prosta droga do melancholii. O antyutopii 451 stopni Fahrenheita Raya Bradbury’ego i jej filmowych adaptacjach [The Easy Route to Melancholy. 451 degrees Fahrenheit by Ray Bradbury and its Film Adaptations]. „Przestrzenie Teorii” 32. Poznań 2019, Adam Mickiewicz University Press, pp. 257–272. ISSN 1644-6763. DOI 10.14746/pt.2019.32.13.
The article is an attempt to interpret Ray Bradbury’s anti-utopian novel 451 degrees Fahrenheit, published in 1953, and two film adaptations of this book: the film directed in 1966 by François Truffaut and Ramin Bahran television adaptation from 2018. All versions have a similar story structure and tell about the near future, in which the main task of the fire department is burning books. The differences consist in shifts of emphasis within the world presented. The author proves that the 1966version shows a possible world, which is “an audio world”, while in Ramin Bahrani’s work we are dealing with the “pictorial world”; in the 1966 film the written word is replaced by sounds and the spoken word, and in the version from 2018 by paintings. These differences indicate not only different possibilities for interpreting Ray Bradbury’s novel, but also transformations that took place at different levels of the reality surrounding us.Lewicki Arkadiusz, Prosta droga do melancholii. O antyutopii 451 stopni Fahrenheita Raya Bradbury’ego i jej filmowych adaptacjach [The Easy Route to Melancholy. 451 degrees Fahrenheit by Ray Bradbury and its Film Adaptations]. „Przestrzenie Teorii” 32. Poznań 2019, Adam Mickiewicz University Press, pp. 257–272. ISSN 1644-6763. DOI 10.14746/pt.2019.32.13.
The article is an attempt to interpret Ray Bradbury’s anti-utopian novel 451 degrees Fahrenheit, published in 1953, and two film adaptations of this book: the film directed in 1966 by François Truffaut and Ramin Bahran television adaptation from 2018. All versions have a similar story structure and tell about the near future, in which the main task of the fire department is burning books. The differences consist in shifts of emphasis within the world presented. The author proves that the 1966version shows a possible world, which is “an audio world”, while in Ramin Bahrani’s work we are dealing with the “pictorial world”; in the 1966 film the written word is replaced by sounds and the spoken word, and in the version from 2018 by paintings. These differences indicate not only different possibilities for interpreting Ray Bradbury’s novel, but also transformations that took place at different levels of the reality surrounding us
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