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    Wyświetlanie 1-11 z 11
    Tytuł:
    Taking account of the shift and inertia of rotation in problems of diagnostics of the spectra of critical forces mechanical systems
    Autorzy:
    Orobey, Viktor
    Nemchuk, Oleksii
    Lymarenko, Oleksandr
    Piterska, Varvara
    Lohinova, Liliia
    Powiązania:
    https://bibliotekanauki.pl/articles/1840884.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    boundary element method
    core system
    critical force
    mechanics
    stability
    metoda elementów brzegowych
    siła krytyczna
    mechanika
    stabilność
    Opis:
    Diagnostics of stability of the cores constructions, elements of the carrier system of the ship and port facilities, reduces to the definition of critical forces, excess which causes a transition of the system from one equilibrium state to another. Such a transition often leads to the destruction of the constructions or other forms of accidents, and therefore it is extremely undesirable and for practice it is important to knowledge of a specific spectrum of critical forces and their corresponding forms of loss of stability.
    Źródło:
    Diagnostyka; 2021, 22, 1; 39-44
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Entrepreneurship in School in the Conditions of the Education System Reform in Poland – a Voice in the Discussion on the Directions of Change
    Autorzy:
    Rachwał, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2109067.pdf
    Data publikacji:
    2017-12-17
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    core curriculum
    education system of Poland
    entrepreneurship education
    reform of education system
    Opis:
    Preceded by the debate, the 2016 implementation of the school reform in Poland brought serious organisational and program changes. These changes also concern entrepreneurship education, therefore the subject of the article is the discussion on the proposals of the Ministry of Education regarding changes to the school system, in the context of yet another comprehensive organisational and program reform of the Polish education system. The primary goal of the paper is to present the direction of change, based on the current research and discussions conducted by various forums. The author’s claims in this regard are based not only on his reflections but also on the voices presented by the participants of Kraków entrepreneurship conferences and conventions of teachers, as well as by the authors of the papers included in the previous volumes of this annual. Under the limited number of hours dedicated to the teaching of entrepreneurship in post-primary schools in general education, that is, compulsory for all pupils, the most important is the careful selection of objectives and content of entrepreneurship education. The article concludes with the presentation of the essential conditions influencing the success of the implementation of changes, mainly related to the appropriate preparation of entrepreneurship teachers.
    Źródło:
    Przedsiębiorczość - Edukacja; 2017, 13; 330-339
    2083-3296
    2449-9048
    Pojawia się w:
    Przedsiębiorczość - Edukacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technological Advances in Japan’s High-Rise Buildings
    Autorzy:
    Szołomicki, Jerzy
    Golasz-Szołomicka, Hanna
    Powiązania:
    https://bibliotekanauki.pl/articles/391123.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    core structure
    damping system
    high-rise buildings
    struktura rdzenia
    system tłumienia
    wysokie budynki
    Opis:
    The architectural and structural analysis of selected high-rise buildings in Japan is presented in this paper. Tokyo, Osaka and Nagoya have the largest share in development of high-rise buildings. Those cities are very densely populated and moreover they are located in one of the most active seismic zones. The combination of these factors has resulted in the creation of sophisticated designs and innovative engineering solutions, especially in the field of design and construction of high-rise buildings. The foreign architectural studios (Jean Nouvel, Kohn Pedesen Associates, Skidmore, Owings & Merrill) which specialize in the designing of skyscrapers, played a major role in the development of technological ideas and architectural forms for such extraordinary engineering structures. Among the projects completed by them, there are examples of high-rise buildings that set precedents for future development. An essential aspect which influences the design of high-rise buildings is the necessity to take into consideration their dynamic reaction to earthquakes and counteracting wind vortices. The need to control motions of these buildings, induced by the force coming from earthquakes and wind, led to the development of various methods and devices for dissipating energy during such phenomena. Currently, Japan is a global leader in seismic technologies which safeguard seismic influence on high-rise structures. Due to these achievements the most modern skyscrapers in Japan are able to withstand earthquakes with a magnitude of over seven degrees at the Richter scale. Applied damping devices applied are of a passive type, which do not require additional power supply or active type which need the input of extra energy. In recent years also hybrid dampers were used, with an additional active element to improve the efficiency of passive damping.
    Źródło:
    Budownictwo i Architektura; 2019, 18, 2; 47-71
    1899-0665
    Pojawia się w:
    Budownictwo i Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of temperature field in a three-phase high voltage cable system
    Autorzy:
    Tykocki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/97521.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    Pareto principle
    high voltage cable
    3-phase system
    core temperature
    Opis:
    A modified "Pareto principle" has been applied to the analysis of the temperature field in three-phase high-voltage cables. In the paper the temperature field is described by thirteen distinct parameters including the geometrical dimensions of the system. By solving the thermal conductivity equation 2p times, it is possible to determine the parameters belonging to set A, which exert a decisive influence on the temperature of the cable core. To describe the ABC sets elements of linear algebra are applied. The paper’s concluding notes present a preliminary optimization procedure of the system.
    Źródło:
    Computer Applications in Electrical Engineering; 2015, 13; 51-64
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancing the possibilities in visualisation of the ferroresonance phenomenon
    Autorzy:
    Klimas, Maciej
    Majka, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/376677.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    ferroresonance
    Power System
    ferromagnetic core coil
    measurements
    state space and plane representation of dynamical systems
    Opis:
    Waveforms measured and recorded in a ferroresonant circuit are the base for many computations, including simulation of ferroresonance circuit over - current/voltage responses and modelling a nonlinear coil. During such a study of ferroresonance phenomenon, the time dependent nonlinear differential equations are derived from R – Ψ(i) – C ferroresonant circuit. The system of nonlinear equations is numerically solved using various algorithm applications. In applied mathematics, in particular the context of the nonlinear dynamical systems analysis, phase – plane/space graphs are a visual display of certain characteristics of kinds of differential equations. The aim of the paper is a full plane/space presentation of all possible states of a test circuit when the ferroresonance occurs. Poincare maps application is also mentioned in the paper.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2019, 98; 115-124
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Conscious Semiotic Mind
    Autorzy:
    Konderak, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/561298.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Semiotyczne
    Tematy:
    cognitive-semiotic system
    phenomenal consciousness
    awareness
    core consciousness
    extended consciousness
    valuation features
    somatic marker
    metasemiosis
    Opis:
    The paper discusses possible roles of consciousness in a semiotic (meaning-making) activity of a cognitive agent. The discussion, we claim, is based on two related approaches to consciousness: on Chalmers’ theory of phenomenal and psychological consciousness and on Damasio’s neural theory, which draws a distinction between core and extended consciousness. Two stages of cognitive-semiotic processing are discussed: the moment of perception of a sign as a meaningful entity and the metasemiotic processes understood as the human capacity to reflect on signs and their usage, analyse and control processes of recognition, interpretation of signs and to detect and correct errors in semiotic activity. In the case of the first stage, it is argued that signs as meaningful entities have a distincly experiential character. The feeling of meaningfulness is a result of phenomenal consciousness, in particular a result of the so-called valuation features of phenomenal experience. I claim that this aspect of cognitive-semiotic activity is possible owing to a special neural mechanism called a semiotic marker. It is argued that semiotic systems have to be able to use signs as signs, i.e. they should display some metacognitive capacities, in particular an ability to analyse semiosis at a metalevel. It is argued that such metasemiosis is dependent on psychological consciousness (in Chalmers’ terms: awareness) and is realized at the neural level in the form of extended consciousness. The paper is based on a particular understanding of cognitive semiotics as a discipline involving analyses of cognitive processes as semiotic processes, i.e. processes requiring usage of signs.
    Źródło:
    Studia Semiotyczne; 2017, 31, 1; 67-89
    0137-6608
    Pojawia się w:
    Studia Semiotyczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Administration-and communication-aware IP core mapping in scalable multiprocessor system-on-chips via evolutionary computing
    Autorzy:
    Guderian, F.
    Schaffer, R.
    Fettweis, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/91539.pdf
    Data publikacji:
    2012
    Wydawca:
    Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
    Tematy:
    intellectual property
    IP
    IP core
    mapping
    system-on-chips
    mixed-integer linear programming
    MILP
    genetic algorithm
    GA
    administration
    communication
    Opis:
    In this paper, an efficient mapping of intellectual property (IP) cores onto a scalable multiprocessor system-on-chip with a k-ary 2-mesh network-on-chip is performed. The approach is to place more affine IP cores closer to each other reducing the number of traversed routers. Affinity describes the pairwise relationship between the IP cores quantified by an amount of exchanged communication or administration data. A genetic algorithm (GA) and a mixed-integer linear programming (MILP) solution use the affinity values in order to optimize the IP core mappings. The GA generates results faster and with a satisfactory quality relative to MILP. Realistic benchmark results demonstrate that a tradeoff between administration and communication affinity significantly improves application performance.
    Źródło:
    Journal of Artificial Intelligence and Soft Computing Research; 2012, 2, 2; 133-146
    2083-2567
    2449-6499
    Pojawia się w:
    Journal of Artificial Intelligence and Soft Computing Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Forming of the regional core transport network taking into account the allocation of alternative energy sources based on artificial intelligence methods
    Формирование опорной транспортной сети региона с учетом размещения альтернативных источников энергии на основе методов искусственного интеллекта
    Autorzy:
    Zhuravskaya, M.
    Tarasyan, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/374401.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    core transport network
    logistic system
    logistic center allocation
    renewable energy
    fuzzy set theory
    genetic algorithm
    rdzeń sieci transportowej
    system logistyczny
    energia odnawialna
    teoria zbiorów rozmytych
    algorytm genetyczny
    Opis:
    In the modern world the alternative energy sources, which considerably depend on a region, play more and more significant role. However, the transition of regions to new energy sources lead to the change of transport and logistic network configuration. The formation of optimal core transport network today is a guarantee of the successful economic development of a region tomorrow. The present article studies the issue of advanced core transport network development in a region based on the experience of European and Asian countries and the opportunity to adapt the best foreign experience to Russian conditions. On the basis of artificial intelligence methods for forest industry complex of Sverdlovskaya Oblast the algorithm of problem solution of an optimal logistic infrastructure allocation is offered and some results of a regional transport network are presented. These methods allowed to solve the set task in the conditions of information uncertainty. There are suggestions on the improvement of transport and logistic network in the territory of Sverdlovskaya Oblast. Traditionally the logistics of mineral fuel plays main role in regions development. Actually it is required to develop logistic strategic plans to be able to provide different possibilities of power-supply, flexible enough to change with the population density, transport infrastructure and demographics of different regions. The problem of logistic centers allocation was studied by many authors. The approach, offered by the authors of this paper is to solve the set of tasks by applying artificial intelligence methods, such as fuzzy set theory and genetic algorithms.
    В современном мире альтернативные источники энергии, которые в значительной степени зависят от региона, играют все более значимую роль. Однако переход регионов к новым источникам энергии приведет к изменению транспортно- логистического конфигурации сети. Формирование оптимальной опорной транспортной сети сегодня является залогом успешного экономического развития региона завтра. Настоящая статья изучает вопрос опережающего развития опорной транспортной сети региона на основе опыта стран Европы и Азии, а также возможность адаптировать лучший зарубежный опыт к российским условиям. На основе методов искусственного интеллекта для лесопромышленного комплекса Свердловской области предлагается алгоритм решения задачи оптимального логистического распределения инфраструктуры и представлены некоторые результаты моделирования региональной транспортной сети. Эти методы позволили решить поставленную задачу в условиях информационной неопределенности. Дать предложения по совершенствованию транспортной и логистической сети на территории Свердловской области. Зависимость логистики от минерального топлива, является устойчивой тенденцией развития регионов, однако при составлении стратегических планов необходимо на ряду, с плотностью населения, особенностями транспортной инфраструктуры и прогнозом демографических изменений, также предусмотреть альтернативные возможности смены источников энергоресурсов. К проблеме размещения логистических центров обращались многие авторы. Особенностью подхода, предлагаемого авторами этой статьи является применение методов искусственного интеллекта, в частности, теории нечетких множеств и генетических алгоритмов.
    Źródło:
    Transport Problems; 2014, 9, 4; 121-130
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applying a fractional coil model for power system ferroresonance analysis
    Autorzy:
    Majka, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/200329.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ferroresonant circuit
    fractional derivative
    ferromagnetic core coil
    hysteresis
    modeling
    measurement verification
    nonlinear dynamics
    power system
    pochodna ułamkowa
    histereza
    modelowanie
    nieliniowa dynamika
    układ zasilania
    Opis:
    This paper addresses the problem of modeling the nonlinear coil used for ferroresonant circuit analysis. The effect of ferroresonance is described and a general modeling approach is presented. The hysteresis modeling problem is also shortly discussed, on the example of a ferromagnetic coil. A brief overview of available literature and contributors to this area are provided. A series RLC circuit supplied from an AC source is discussed. The application of the fractional derivative in the modeling of an iron core coil is presented and suggestions of model implementations are given. The computations performed are illustrated by means of waveform data obtained from computer simulations and compared with those obtained from measurements performed in a specially prepared laboratory setup.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 4; 467-474
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The literary and cultural education of “screen readers”. Reflections inspired by the new core curriculum and more
    Edukacja literacko-kulturowa „ekranowych czytelników”. Refleksje inspirowane nową podstawą programową i nie tylko
    Autorzy:
    Morawska, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/1042109.pdf
    Data publikacji:
    2020-03-31
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    edukacja polonistyczna
    kultura i literatura
    reforma oświaty
    podstawa programowa
    strategie kształcenia
    uczniowie
    czytanie
    „epoka ekranów”
    Polish philological education
    culture and literature
    reform of the education system
    core curriculum
    education strategies
    pupils
    reading
    “the screen age”
    Opis:
    The article is a voice in the discussion on the changes entailed by the new reform of the Polish education system (introduced as of the 2017/2018 school year). An important part of it is the process of the cultural and literary education of 4–8th graders described in the core curriculum, who are described as representatives of the generation of “screen readers”. The assumed perspective enabled the author to present the possible directions of educational activities in the face of the developmental and socio-cultural needs of pupils growing up under the major impact of modern media and technology. The proposed solutions offer examples and encouragement for interpretative, reflective and creative reading and implementation of the binding core curriculum.
    Artykuł jest głosem w dyskusji nad zmianami, które wiążą się z nową reformą polskiej oświaty (wprowadzaną od roku szkolnego 2017/2018). Ważną jej część stanowi projektowany w podstawie programowej proces kształcenia kulturowo literackiego uczniów klas 4–8, którzy są tu opisywani jako reprezentanci pokolenia „ekranowych czytelników”. Przyjęta perspektywa pozwoliła przedstawić możliwe kierunki postępowania dydaktycznego wobec potrzeb rozwojowych i społeczno-kulturowych uczniów wzrastających pod znacznym wpływem nowoczesnych mediów i technologii. Zaproponowane rozwiązania są przykładem i zachętą do interpretacyjnego, refleksyjnego, twórczego czytania i wdrażania aktualnej podstawy programowej.
    Źródło:
    Acta Universitatis Lodziensis. Folia Litteraria Polonica; 2020, 56, 1; 333-357
    1505-9057
    2353-1908
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Litteraria Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A particular case of a variational problem of control in an active aviation system
    Autorzy:
    Goncharenko, A. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/213497.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    active system
    active element
    aviation transportation
    multi-alternativeness
    conflicts
    safety in aviation
    human factor
    subjective preferences functions
    subjective entropy
    hybrid model of combined pseudo-entropy function of subjective preferences
    preferences prevailing/dominating factor/index
    variational principle
    core of conflict
    Opis:
    It is theoretically considered one of the simplest particular cases of a variational problem of control in an active aviation system acting in conditions of multi-alternativeness and conflicts. With the help of the Euler-Lagrange equations it is obtained the canonical distributions of the subjective preferences for the given functional; differential equation of the second order for finding extremals of the controlled functions of the functional The differential equation satisfies the conditions of existence and unique solution. Mathematical modeling is fulfilled with the help of the hybrid pseudo-entropy function. Plotted corresponding diagrams.
    Źródło:
    Prace Instytutu Lotnictwa; 2013, 1 (228); 3-12
    0509-6669
    2300-5408
    Pojawia się w:
    Prace Instytutu Lotnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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