Compressed sensing for real measurements of quaternion signals     

Agnieszka Badeńska  Łukasz Błaszczyk 《Journal of The Franklin Institute》2017,354(13):5753-5769

The paper concerns compressed sensing methods in the quaternion algebra. We prove that it is possible to uniquely reconstruct – by ?₁ norm minimization – a sparse quaternion signal from a limited number of its real linear measurements, provided the measurement matrix satisfies so-called restricted isometry property with a sufficiently small constant. We also provide error estimates for the approximated reconstruction of a non-sparse quaternion signal from noisy and noiseless data.  相似文献   

Arguing in Portugal: A cross-cultural analysis     

Marcin Lewiński  Dale Hample  João Sàágua  Dima Mohammed 《Journal of International and Intercultural Communication》2018,11(3):233-253

We report data on Portuguese understandings of interpersonal arguing, based on a survey conducted in Portugal (N?=?252). Employing concepts and methods developed for studying interpersonal arguing, we report on the levels of argumentativeness, verbal aggressiveness, personalization of conflict, and argument frames. After comparing Portuguese men and women, we compare Portuguese respondents with two groups of US respondents. In contrast to US respondents, Portuguese report to argue more prosocially, cooperatively and civilly, and are more sophisticated in their reflections about arguing. We discuss these results in the context of the Portuguese notion of argumentation (argumentação) and Portuguese culture more broadly.  相似文献   

Are School-Provided Skills Useful at Work? Results of the Wiles Test     

Liwiński  Jacek  Pastore  Francesco 《Research in higher education》2021,62(1):72-97

Research in Higher Education - We test for the signaling hypothesis versus the human capital theory using the Wiles test in a country which has experienced a dramatic increase in the supply of...  相似文献   

The Nutritional Value and Physiological Properties of Diets with Raw and Candida utilis-Fermented Lupin Seeds in Rats     

Ma?gorzata Kasprowicz-Potocka  Anita Zaworska  Andrzej Frankiewicz  W?odzimierz Nowak  Piotr Gulewicz  Zenon Zduńczyk  Jerzy Ju?kiewicz 《Food Technology and Biotechnology》2015,53(3):286-297

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Philosophy of education in post-Soviet societies of Eastern Europe: Poland,Lithuania and Slovenia     

Rafał Godoń  Palmira Jucevičienė  Zdenko Kodelja 《比较教育学》2004,40(4):559-569

This article explores the role of philosophy of education in three post-Soviet societies of Eastern Europe: Poland, Lithuania and Slovenia. The characteristic themes and approaches of philosophical reflection about education in these societies are explored with reference to three periods: the pre-Soviet, Soviet and post-Soviet periods.  相似文献   

Book reviews     

Premadasa Udagama  Mirosław Szymański  Grzegorz Szumski  Kevin M. Lillis  J. K. Rooney  Dietmar Kahsnitz  Emiel Droogleever Fortuijn  R. Murray Thomas  Lars Mählck  N. V. Varghese 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1989,35(3):365-377

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The University of Warmia and Mazury in Olsztyn as an Agent of Regional Development and Higher Education in Poland     

Ryszard J. Górecki 《Higher Education in Europe》2001,26(3):327-340

The Polish University of Warmia and Mazury is presented as a very successful new, regional university located in northeastern Poland, the Polish part of what used to be East Prussia. The intellectual origins of this university go back to a post-Second World War desire on the part of Polish intellectuals to recreate the University of Koenigsberg on Polish territory. A first attempt, between 1945 and 1950, failed. The second attempt was brought to a conclusion, in September 1999, by the formal merger of the University of Agriculture and Technology of Olsztyn, harking back to 1950, and the Higher School of Pedagogy, also of Olsztyn, harking back to 1969. The new university has a traditional academic structure offering an eclectic curriculum. Its course offerings range from the liberal arts, philosophy, medicine and theology, to the latest fields in computer science, management, agriculture, land management, and many other disciplinary and interdisciplinary areas. The university has rapidly become a center of culture and development for its region, one of the poorest in Poland.  相似文献   

The crisis of Polish higher education     

Ryszard Piasek  Michalina Vaughan 《Higher Education》1987,16(1):53-62

Higher education has a major contribution to make to the socio-economic and cultural life of contemporary Poland. The importance of promoting a continuous development in the tertiary educational sector is widely acknowledged throughout the world. In many countries, the number of students is still increasing, to reach or even to exceed a third of the relevant cohort. Yet in Poland the crisis of higher education which has been observed for some years has led to a rapid decline in student numbers. It is the purpose of the present article to look at underlying causes, including demographic, economic and other factors. Attention will be paid to the whole sector of higher education, but also to specific schools and faculties, and to the participation of women in particular. The impact of state educational policy will be considered, as will the changes in the interests and aspirations of the young generation. The focus is on quantitative changes in tertiary education, but some general conclusions will be drawn from them and an attempt will be made to assess their socio-economic and cultural implications.  相似文献   

On the use of ASTM closed vessel tests in accelerated ageing research     

Tomasz Sawoszczuk  Andrzej Bara&#x;ski  Janusz Marek &#x;agan  Tomasz &#x;ojewski  Katarzyna Zi&#x;ba 《Journal of Cultural Heritage》2008,9(4):401-411

The ASTM D6819-02e3 standard for testing the accelerated ageing of paper, published in 2002, recommends using closed glass vials in order to keep the degradation products in contact with the paper and thus permitting a better simulation of the natural ageing conditions inside closed books. In the present study, the actual conditions and their stability inside closed vessels have been evaluated. The necessity of assuring a very high sealing performance (tightness) of the systems in order to avoid leakage of water vapour is the main drawback of this ageing method. Systematic studies presented in this publication tried to monitor this tightness and have provided data that helped to answer the question of what circumstances could lead to achieving its improvement. Both gravimetric monitoring of water content in vials and “in situ” IR measurements of the aged paper humidity have been applied for this purpose. As a result, better sealing materials (gaskets and caps) than those recommended by the ASTM standard, have been found. Additionally, application of a dynamometric spanner for closing the vials is recommended, as this is a guarantee of reasonably high and recurring tightness of the systems used in tests. Nevertheless, the systematic, linear with time, loss of moisture for all used vials was observed. A 9% loss of the initial moisture content in samples of the aged paper was observed for the tested conditions (14 days at 90 °C). Therefore, it seems that including some kind of gravimetric control for ageing tests performed in closed vessels is of essential importance.Kinetic studies of accelerated ageing in both closed and open systems, as monitored by DP and breaking length measurements, unexpectedly show that no statistically meaningful difference of degradation rates can be observed. On the other hand, the pH and whiteness index values reveal a meaningful difference between the rates of ageing in these systems, thus confirming the basic assumption of the ASTM test concerning the interaction of paper degradation products with the paper itself.  相似文献   

On the numerical competence of six-years-old children     

Aleksandra Urbańska 《Educational Studies in Mathematics》1993,24(3):265-275

The paper presents some of the results obtained in the course of experiments which have provided evidence of a considerable degree of numerical competence exhibited by six-years-olds and of their fairly advanced activity in discovering and dealing with arithmetical problems.The children used both counting and non-counting ways for solving arithmetical problems. They applied them elastically and interchangeably, often combining them into mutually complementary patterns of finding solutions.  相似文献