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Wyświetlanie 1-15 z 55
Tytuł:
On a method of target detection and tracking used in air defence
O pewnej metodzie wyszukiwania i śledzenia celu w obronie powietrznej
Autorzy:
Osiecki, J. W
Stefański, K.
Powiązania:
https://bibliotekanauki.pl/articles/280757.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
gyroscope
scanning
phase trajectories
Opis:
The work discusses a new approach to the control of motion of the gyroscope axle with an in-built optical system responsible for detection and tracking of aerial targets emitting infrared radiation. The method, which has been presented by the authors at numerous conferences on the subject, requires using phase trajectories of control errors.
W pracy przedstawiono metodę sterowania ruchem osi giroskopu z umieszczonym w niej układem optycznym dla wykrywania i śledzenia celów powietrznych, emitujących promieniowanie w zakresie podczerwieni. Nawiązuje do wcześniejszych wystąpień autorów na konferencjach i przedstawia dalszy rozwój metody. Metoda sterowania polega na wykorzystaniu trajektorii fazowych uchybów sterowania.
Źródło:
Journal of Theoretical and Applied Mechanics; 2008, 46, 4; 909-916
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immigrant children education as means of integration: the Lithuanian case
Autorzy:
Orechova, Monika
Powiązania:
https://bibliotekanauki.pl/articles/628337.pdf
Data publikacji:
2018
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
immigrant education
immigrant integration
integration trajectories
Opis:
Aim. This research paper discusses the educational process of immigrant children in Lithuania with the intention to determine the integration trajectory most likely to be chosen by the immigrant students. Methods. The research methods include legal analysis of Lithuanian legislations related to immigration, immigrant integration and education, meta-analysis of previous research on immigrant integration into Lithuanian society as well as semi-structured interviews with experts of the field. Results. Having completed the research, the following conclusion has been drawn: immigrant children education in Lithuania does not tend to create conditions for successful integration and more often than not influences immigrant students to choose those integration paths that may inspire inner or outer conflict. This is due to the lack of integration policy and strategy at the state level as well as the tendency to create a cultural hierarchy wherein the Lithuanian culture is implicitly considered as above others. Practical application. The results of the research can be used to improve the conditions of immigrant children education in Lithuanian schools on the national level as well as by schools willing to foster the integration of immigrant students; the results can also be considered in the process of establishing integration policy on the state level.
Źródło:
Journal of Education Culture and Society; 2018, 9, 2; 238-247
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Family involvement in schooling. A North Portugal Portrait by elementary students
Autorzy:
Freires, Thiago
Pereira, Fátima
Santos, Carolina
Powiązania:
https://bibliotekanauki.pl/articles/2005007.pdf
Data publikacji:
2016-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
family involvement
parental involvement
schooling trajectories
narratives
Opis:
Family involvement in education is highlighted as a key factor to boost students’ success. In this paper, we analyze ninth-graders’ discourses on how they see family participation in school-related activities. data derive from 38 biographical interviews involving students from eight public schools from North Portugal. Following a narrative approach, findings emphasize that active involvement of parents make up a fundamental dimension for the consolidation of educational projects. data reveal that mothers play a leader role in the educational setting, while fathers’ lack of participation can impact negatively on students’ trajectories. In addition, research indicates that an extended family can emerge as crucial to the maintenance of a schooling project.
Źródło:
The New Educational Review; 2016, 44; 52-61
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Varijacije, odjeci i tragovi matoševskog flanerizma u izboru iz suvremene hrvatske proze
Variations, Reverbaration and Traces of Matoš’s flâneurism in the Selection of Contemporary Croatian Prose
Autorzy:
Gajin, Igor
Powiązania:
https://bibliotekanauki.pl/articles/635464.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
fl âneurism
transition
postmodernism
mediasphere
strategies
trajectories
Opis:
In his book, Čitanje grada (Reading the City), Krešimir Nemec stated that A.G. Matoš has „modeled after Baudelaire, introduced to the Croatian literature a figure of an idle observer, a curious pedestrian or a flâneur, a typical impressionist product of urban culture and aesthetics of the street”. As a reference and a starting point for reflection on flâneurism’s motifs in contemporary Croatian literature, A.G. Matoš is used as a factor of distinction in outlining one of the most characteristic aspects of the so-called transitional literature. Having said that, a common conclusion is that flâneurism has, in the Croatian contemporary prose, moved from thestreets to the shopping malls. However, contemporary Croatian prose offers the reading of other flâneurism practices as a movement that reflects the changes in categories of urban life, space, daily life and discourse in the transition period from the 20th to the 21st century due to the transformative processes such as a transition, globalization and media revolution. Ultimately, Nemec writes: „If he had experienced the present era of electronics and virtual reality, Matoš probably would have called the tireless surfers of the endless Internet sphere electronic flâneurs”.
Źródło:
Poznańskie Studia Slawistyczne; 2014, 7
2084-3011
Pojawia się w:
Poznańskie Studia Slawistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fragmented agrarian space: building blocks and modernisation trajectories. The case of Slovenia
Autorzy:
Potočnik Slavič, Irma
Powiązania:
https://bibliotekanauki.pl/articles/1052558.pdf
Data publikacji:
2017-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
fragmented agrarian space
pluri-activity
modernisation trajectories
Slovenia
Opis:
Production, processing and consumption within Slovenian agrarian space are fragmented due to physical constraints (72.4% of the territory categorised as ANC) and socio-geographic factors. Based on available data, five essential building blocks of contemporary Slovenian agrarian space (available land, change management, integrated circular economy, adjustable policies, and flexibility of institutions) are discussed. Interrelations among the building blocks shape the modernisation trajectories of approx. 70,000 agricultural holdings in Slovenia. The coexistence of three modernisation trajectories, i.e. practised autarky, various forms of pluri-activity, and small-scale intensive and innovative modernisation, creates a complex mosaic. The governance of multifunctional and multi-structured agrarian space is becoming more demanding.
Źródło:
Quaestiones Geographicae; 2017, 36, 2; 37-48
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mapping Research and Teaching Trajectories: A Critical Turn in the Indian IR
Autorzy:
Behera, Navnita
Powiązania:
https://bibliotekanauki.pl/articles/2091668.pdf
Data publikacji:
2020-06-24
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
Tematy:
Indian IR
research trajectories
critical pedagogy
area studies
Opis:
The paper seeks to map the shifting contours of IR (International Relations) research in India from its predominantly area-studies focus towards disciplinary inquiries and within that, from the traditional realist frameworks towards an engagement with critical theories ranging from constructivism and feminism to post-colonialism. With a growing Indian involvement in the domain of global governance, the scholarly research is also going beyond an Indo-centric focus to addressing the diverse problematiques of modern IR as such. The pedagogic practices of Indian IR are however, not matching the pace of such changes. The paper concludes that developing critical pedagogic practices will play a determining role in shaping the future of the IR discipline in India.
Źródło:
Stosunki Międzynarodowe - International Relations; 2015, 51, 4; 134-151
0209-0961
Pojawia się w:
Stosunki Międzynarodowe - International Relations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Method of In Plane Generating Trajectories for Tools which Generate by Enveloping Application in CATIA
Autorzy:
Teodor, V.
Paunoiu, V.
Berbinschi, S.
Baroiu, N.
Oancea, N.
Powiązania:
https://bibliotekanauki.pl/articles/99877.pdf
Data publikacji:
2015
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
in-plane generating trajectories
CATIA
rolling generating tools
Opis:
The method of “in-plane generating trajectories” is a method designed to study the enveloping profiles associated with a pair of rolling centrodes. This method assumes knowledge the analytical form of the in-planes trajectories described by the points onto the profiles to be generated. These trajectories are known in the reference system of the generating tool, which may be a rack-gear, a gear-shaped or a rotary cutter tool. The envelope of these trajectories represents the profile of the generating tool. An original method for determining the enveloping condition is presented in this paper. Application for ordered curling of non-involute profiles were developed based on the specific enveloping condition. A new solution is proposed. This solution uses the capabilities of the CATIA graphical environment. Graphical solutions are proposed versus analytical solutions in order to validate the proposed method.
Źródło:
Journal of Machine Engineering; 2015, 15, 4; 69-80
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tectonophysics map of discontinuous deformation of Rybnik region
Autorzy:
Głogowska, M.
Warzecha, R.
Powiązania:
https://bibliotekanauki.pl/articles/178635.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
compaction areas
tectonophysic
minimum stress trajectories
normal faults
Opis:
In this paper, a Tectonophysics map of Rybnik region is presented which is based on the method of determining the direction of the trajectory of the principal stresses in the rock mass and axis orientation of these stresses. This method is used in tectonophysicsand is based on the character and parameters of faults. The whole map of Rybnik region encompasses an area of active mines: Rydułtowy-Anna, Marcel, Chwałowice, Jankowice as well as closed ones: Rymer and 1 May of Marcel mine. The paper presents only some fragments of the maps made for the four fault systems and a collective map of tectonophysic, i.e., showing chart areas of compaction for all the systems. The tectonophysics map was made to a scale of 1:20 000. Before the proper work which was the reconstruction of the compaction zone, preparatory work was done. This consisted of updates in 2013 of the tectonics of this area. As a result, tectonic maps were obtained where faults were projected on one level to get their proper azimuth and their inclination. So, a map was made which was used to separate four fault systems arising in similar conditions of stress. Next followed the reconstruction of the main stress fields, which was the cause of faults. On the map there are plotted trajectories showing minimum stress (σ3) and areas of compaction. The maps thus constructed will be used for further studies on the stress spreading and the impact of these areas for geomechanical properties.
Źródło:
Studia Geotechnica et Mechanica; 2016, 38, 2; 29-35
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical Analysis for a New Tennis Ball Launcher
Autorzy:
Wójcicki, K.
Puciłowski, K.
Kulesza, Z. S.
Powiązania:
https://bibliotekanauki.pl/articles/386374.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
wyrzutnia
trajektorie
analiza matematyczna
launcher
trajectories
mathematical analysis
Opis:
The paper presents the mathematical analysis for the design of a new tennis ball launcher in order to assess the possibilities for its technical implementation. First, traditional launchers are described. Next, several new requirements improving training possibilities of such machines are suggested. The motion equation of the flying tennis ball is formulated and numerically solved. This makes it possible to analyze the trajectories of the ball for different initial conditions: elevation and heading angles, as well as the rollers angle. Then, the mathematical analysis of the launcher with two counter rotating rollers is presented. Stiffness (Young's) modulus and friction coefficients for the typical tennis ball have been determined ex-perimentally. Based on these, initial conditions for the throw have been found: rotating speeds of the rollers and powers of the driving motors.
Źródło:
Acta Mechanica et Automatica; 2011, 5, 4; 110-119
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Motivation and demotivation over two years: A case study of English language learners in Japan
Autorzy:
Kikuchi, Keita
Powiązania:
https://bibliotekanauki.pl/articles/780573.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
learning experience
L2 motivational self system
motivational trajectories
Opis:
This paper is about four Japanese university students majoring in international studies, who participated in a two-year study examining changes in their motivation. Using monthly interviews and a 29-item questionnaire on Dörnyei’s (2005) L2 motivational self system that was administered alongside each interview, the trajectories of learner motivation were investigated, based on both quantitative and qualitative data. First, changes in the participants’ motivation were identified using quantitative data. Next, a variety of motivators and demotivators that learners experienced both inside and outside of their classrooms were analyzed using the qualitative data. With the data obtained, this study focuses on how four learners’ language learning motivation and contexts adapt to each other, and how the dynamics of the four learners’ motivation changes due to their learning experiences. Each learner was different in their trajectory of motivation and the kinds of motivators and demotivators that they experienced in their particular contexts. The four learners underwent unique motivators and demotivators, and reacted differently. While participants identified their ideal L2 selves, or ought-to L2 selves, these self-guides were not strengthened by their L2 experiences over time. Based on these findings, the importance of studying the rich experiences of language learners in motivation research is discussed.
Źródło:
Studies in Second Language Learning and Teaching; 2019, 9, 1; 157-175
2083-5205
2084-1965
Pojawia się w:
Studies in Second Language Learning and Teaching
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of deuteron motion in a filamentary Plasma-Focus pinch column for different configurations of filaments
Autorzy:
Pasternak, A.
Sadowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/146934.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
deuterons
filamentary pinch
ion trajectories
numerical modeling
plasma focus
Opis:
The motion of deuterons in dynamical filamentary configurations of a PF pinch column has been studied with a three-dimensional numerical model. Apart from magnetic fields, the motion-induced electrical fields as well as ion-ion and ion-electron collisions have been included in the equations of deuteron motion. Calculations were performed for different numbers of filaments and its spatial distributions under different initial conditions. Energy of ions was assumed to be from 10 keV up to 200 keV. The results obtained have shown many possible modes of ion motion and have demonstrated that the current filaments can cause peculiarities observed in the angular distribution of deuterons emitted from the PF pinch column.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 29-32
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Równania trajektorii ciał w centralno-symetrycznym polu ciążenia uwzględniające bilans energetyczno-masowy
The equations of the trajectory of bodies in the central-symmetric gravitational field,taking into account the energy and mass balance
Autorzy:
Kamusiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/221985.pdf
Data publikacji:
2005
Wydawca:
Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Tematy:
pole ciążenia
trajektorie
zmienność masy
gravitational field
trajectories
weight variation
Opis:
W pracy wykazano, że moment prędkości ciała poruszającego się w centralno-symetrycznym polu ciążenia jest wartością stałą, mimo założenia zmienności masy tego ciała. Przedstawiono zarówno klasyczne rownania (zakładające stałość masy) trajektorii ciała w centralno-symetrycznym polu ciążenia jak i równania tej trajektorii, przy uwzględnieniu zmienności masy ciała. Zmienność masy opisano w funkcji jego prędkości i w funkcji promienia wodzącego. Zmienność masy w funkcji prędkości wyrażono dwoma różnymi równaniami i wykazano możliwość oceny ich poprawności-przez porównanie trajektorii opartych na obliczeniach z trajektorią obserwowaną.
The work proves that the velocity of a body moving in the central-symmetric gravitational firld is constant, despite the assumption of it mass variability. Presented are not only the classical equations (assuming the constancy of mass) in the central-symmetric gravitational field but also the equations of that trajectory, with variability of mass. The variability of mass is described as function of the velocity and function of the radius vector. The variability of mass is expressed in two different equations, and presented is a possibility of correctness assessment of the equations by means of comparison of trajectories based on computations with these observed.
Źródło:
Zeszyty Naukowe Akademii Marynarki Wojennej; 2005, R. 46 nr 4 (163), 4 (163); 104-140
0860-889X
Pojawia się w:
Zeszyty Naukowe Akademii Marynarki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wnioski i rekomendacje do dalszych badań dotyczących ścieżek rozwoju słabo rozwiniętych regionów
Autorzy:
Szlachta, Jacek
Dziemianowicz, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2022527.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Economic innovativeness
regional development
regional policy
regional trajectories
underdeveloped regions
Źródło:
Studia komitetu przestrzennego zagospodarowania kraju PAN; 2017, 179; 376-389
0079-3507
Pojawia się w:
Studia komitetu przestrzennego zagospodarowania kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discussion of Machine Tool Intelligence, Based on Selected Concepts and Research
Autorzy:
Jędrzejewski, J.
Kwaśny, W.
Powiązania:
https://bibliotekanauki.pl/articles/99824.pdf
Data publikacji:
2015
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machine tool
intelligence
learning
intelligent avoiding
collisions
trajectories
real time
Opis:
This paper discusses the need to create intelligent machine tools, the expected properties of such machine tools and the benefits they will bring to business and the development of manufacturing. The basis for machine tool intelligence, and the evolution of machine tools towards the development of their intelligent functions, with a special emphasis on control, digitization and virtualization systems, the role of the STP-NC standard, and the prediction of machine tool operating properties, are presented. The arising concepts of the development of intelligent machine tool functions, which take into account the monitoring and planning of a collisionless tool path, are discussed. The approach to achieving real time and the intelligent machine tool is described for copy milling. Also the directions of implementing intelligent functions by machine tool manufacturers are presented using the MAZAK Corporation as an example.
Źródło:
Journal of Machine Engineering; 2015, 15, 4; 5-26
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method of phase trajectories in system diagnostics of economic protectability of industrial enterprises
Autorzy:
Khoma, I.
Powiązania:
https://bibliotekanauki.pl/articles/410877.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
method of phase trajectories
diagnostics
economic protectability
expenses
risk
enterprises
Opis:
The article demonstrates the applied use of the method of phase trajectories for refi nement of results of system-complex diagnostics of economic protectability of industrial enterprise. System of a kind “expenses-risk” with absolute speed of changes of its constituent elements is chosen as the adjustable parameter. On the basis of real dynamics of the specifi ed parameters of the system there was revealed an interrelation with current protectability of entrepreneurial activity of business entity that gives an opportunity to make defi nitely right decision on the prognostic fl uctuation of diagnosed his level of economic protectability in the short term.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2013, 2, 1; 23-30
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
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