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Tytuł:
“The way up is the way down”: Curzio Malaparte’s “Il Cristo Proibito” and Krzysztof Kieślowski’s “Three Colours: Red”
Autorzy:
Coates, Paul
Powiązania:
https://bibliotekanauki.pl/articles/923218.pdf
Data publikacji:
2019-03-25
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
doubling
judgment
fraternité
Christianity
revenge
descent into Hell
Opis:
The statement ‘the way up is the way down’ may imply that the spiritual way to perfection lies through humility. It may however also apply to the physical world that is the source of such spiritual metaphors, and within which the actions play out of fictional characters who themselves serve as metaphors for real ones. I will argue that both meanings apply to both of these films, with a comparison between the two films enabling one to employ Malaparte’s explicit prohibition of a Christ-like position to make apparent a similar prohibition that is only implicit in Kieślowski’s film. Such physical movements provide an appropriate topography for the concern with judgment, knowledge, revenge, isolation and humiliation embodied in the male protagonists of the two films. In each case, the protagonists’ eventual divestment from programmes of judgment and revenge may be related to the prohibition Malaparte formulates explicitly: that upon human re-enactment of the Christ-like position that is the one of judgment. Here a destructive and self-destructive movement downwards, in the sense of dehumanization and extreme isolation, is countered eventually by a downward one that, in fact, leads upwards through an embrace of the humiliation of inaction. The paper examines various ways in which the object of both texts is to rediscover a ‘we’ that is rather one of solidarity than complicity.
Źródło:
Images. The International Journal of European Film, Performing Arts and Audiovisual Communication; 2018, 24, 33; 47-59
1731-450X
Pojawia się w:
Images. The International Journal of European Film, Performing Arts and Audiovisual Communication
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A regularized Newton method in electrical impedance tomography using shape Hessian information
Autorzy:
Eppler, K.
Harbrecht, H.
Powiązania:
https://bibliotekanauki.pl/articles/970140.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
tomografia impedancyjna
optymalizacja kształtu
brzegowe równanie całkowe
electrical impedance tomography
shape optimization
boundary integral equation
Newton type descent
Opis:
The present paper is concerned with the identification of an obstacle or void of different conductivity included in a two-dimensional domain by measurements of voltage and currents at the boundary. We employ a reformulation of the given identification problem as a shape optimization problem as proposed by Roche and Sokolowski (1996). It turns out that the shape Hessian degenerates at the given hole which gives a further hint on the ill-posedness of the problem. For numerical methods, we propose a preprocessing for detecting the barycentre and a crude approximation of the void or hole. Then, we resolve the shape of the hole by a regularized Newton method.
Źródło:
Control and Cybernetics; 2005, 34, 1; 203-225
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Addressing the Problems of Racial Discrimination at the UN Level: The ‘Post-Durban Mechanisms’ and Their Agenda
Autorzy:
Balcerzak, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2092271.pdf
Data publikacji:
2021-08-21
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
Tematy:
United Nations
special procedures of the Human Rights Council
post-Durban mechanisms
racism
racial discrimination
xenophobia
Durban Declaration and Programme of Action
International Decade for People of African Descent
Opis:
The 20th anniversary of the World Conference against Racism, Racial Discrimination, Xenophobia and Related Intolerance, held in Durban in 2001, provides a good opportunity to look at the institutional arrangements undertaken to implement the Durban Declaration and Programme of Action, as well as to study and assess state practice in this regard. This article discusses the activities of expert bodies and the intergovernmental forms of co-operation established after the Durban Conference in order to implement its conclusions and recommendations. The author notes that while the post-Durban developments in the area of counteracting racism are substantial, structural racism, racial injustice, inequality, and discrimination still constitute a disturbing threat to both human dignity and the basic values of the United Nations. It is argued that the 20th anniversary of the Durban Conference should induce states and other relevant stakeholders to reflect on – and reinforce – the UN’s action against racism, racial discrimination, xenophobia, and related intolerance.
Źródło:
Stosunki Międzynarodowe - International Relations; 2020, 56, 4; 51-63
0209-0961
Pojawia się w:
Stosunki Międzynarodowe - International Relations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the influence of helicopter descent velocity changes on the phenomenon of vortex ring state
Autorzy:
Grzegorczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/102235.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
helicopter
Vortex Ring State (VRS)
vertical descent
numerical analysis
CFD
Opis:
The paper presents the results of a numerical aerodynamic analysis whose purpose was to determine the influence of the rate of descent on the vortex ring state (VRS). This phenomenon occurs for an appropriate combination of induced velocity and the velocity of the incoming airstream from the bottom. The rates of change of velocities delimit dangerous areas of flight. The simulations were performed using FLUENT software and the geometry of helicopter W-3 „Sokół”.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 17; 35-41
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximate relaxed descent method for optimal control problems
Autorzy:
Chryssoverghi, I.
Coletsos, J.
Kokkinis, B.
Powiązania:
https://bibliotekanauki.pl/articles/206679.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
dyskretyzacja
kontrola relaksacyjna
sterowanie optymalne
descent method
discretization
optimal control
relaxed controls
Opis:
We consider an optimal control problem for systems governed by ordinary differential equations with control constraints. Since no convexity assumptions are made on the data, the problem is reformulated in relaxed form. The relaxed state equation is discretized by the implicit trapezoidal scheme and the relaxed controls are approximated by piecewise constant relaxed controls. We then propose a combined descent and discretization method that generates sequences of discrete relaxed controls and progressively refines the discretization. Since here the adjoint of the discrete state equation is not defined, we use, at each iteration, an approximate derivative of the cost functional defined by discretizing the continuous adjoint equation and the integral involved by appropriate trapezoidal schemes. It is proved that accumulation points of sequences constructed by this method satisfy the strong relaxed necessary conditions for optimality for the continuous problem. Finally, the computed relaxed controls can be easily approximated by piecewise constant classical controls.
Źródło:
Control and Cybernetics; 2001, 30, 4; 385-404
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Beginnings of the Józef Piłsudski Institute in New York (1943-1956)
Autorzy:
Langowski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/653698.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Historii im. Tadeusza Manteuffla PAN w Warszawie
Tematy:
Józef Piłsudski Institute in New York
KNAPP
National Committee of Americans of Polish Descent
Opis:
Józef Piłsudski Institute was founded in New York, July 4, 1943. The main aim was to maintain constant and independent scientific research facility dealing not only with collecting and organizing historical documents, but also with popularizing unadulterated knowledge about Poland and its recent history. From its earliest days the Institute was based on financial support granted by Polish activists and on membership fees, as well as on larger donations from some members. Since the late forties, when KNAPP activity slowly began to fade, actions and statements of people associated with the Institute were regarded as guidelines for independence environments. These people formed very cohesive environment, being faithful to Piłsudski heritage, negated any compromises with regard to Polish independence. It was strongly anticommunist rejecting all contacts with PRL institutions. Thanks to the energetic work of people connected with the facility rapidly grew both archival and library collections. In 1949 the collection in the library had grown to 2500 books, periodicals reached up to 800 titles. To the library came valuable Polish diplomatic archives, collections of different personalities, as well as documents showing the huge effort of organizations of Poles, who after the end of the war were on the territory of West Germany.
Źródło:
Studia z Dziejów Rosji i Europy Środkowo-Wschodniej; 2012, 47
2353-6403
1230-5057
Pojawia się w:
Studia z Dziejów Rosji i Europy Środkowo-Wschodniej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Canonicity and (In)visibility of Polish American Literature
Autorzy:
Caputa, Sonia
Powiązania:
https://bibliotekanauki.pl/articles/449465.pdf
Data publikacji:
2015
Wydawca:
Wyższa Szkoła Ekonomiczno-Humanistyczna w Bielsku-Białej
Tematy:
canonicity
Polish American literature
polysystem theory
American authors of Polish descent
Anthony Bukoski
Thomas Napierkowski
kanoniczność
literatura polsko-amerykańska
teoria polisystemów
autorzy amerykańscy pochodzenia polskiego
Opis:
According to Thomas Gladsky, Polish American literature was not of the main interest to scholars and “the New World culture and Old Country heritage of approximately fifteen million Americans of Polish descent are [probably] among multicultural America’s best kept secrets”. In this context, the question arises whether literature produced by the descendants of Poles in the United States is not worthy of scholarly attention only because literary works, which are labelled as ‘Polish American,’ lack sufficient artistic expression, or maybe they still remain unappreciated because canon, in the popular understanding of the word, on the one hand, seems to constitute the sphere of dynamic interactions between art and literature and, on the other hand, between discourses of politics and economy. Taking into consideration the polysystem theory, advocated by Itamar Even--Zohar, the author of the present paper addresses the question of visibility of Polish American literature in the context of the history of American ethnic literature(s) and the possibility of moving its position from the peripheries/margins to the centre.
Według Thomasa Gladsky’ego, literatura polsko-amerykańska nie była głównym obszarem zainteresowań dla badaczy, a „kultura Nowego Świata wraz z dziedzictwem Starego Świata w przybliżeniu piętnastu milionów Amerykanów pochodzenia polskiego jest jednym z najbardziej strzeżonych sekretów wielokulturowej Ameryki” . W tym kontekście pojawia się pytanie czy literatura tworzona przez potomków Polaków w Stanach Zjednoczonych nie jest warta zainteresowania środowisk naukowych tylko dlatego, że dzieła literackie skategoryzowane jako „polsko-amerykańskie” cechuje ograniczony potencjał interpretacyjny, czy też dzieła te pozostają niedocenione dlatego, że kanon, w ogólnym rozumieniu tego słowa, z jednej strony jest obszarem dynamicznych interakcji literatury i sztuki, a z drugiej strony wiąże się z dyskursami polityki i ekonomii. Opierając się na teorii polisystemowej propagowanej przez Itamara Evena-Zohara autorka stara się wyjaśnić na czym polega fenomen (nie)widzialności literatury polsko-amerykańskiej w kontekście historii amerykańskich literatur etnicznych i analizuje możliwość znalezienia miejsca dla literatury polsko-amerykańskiej w centrum kanonu literatury amerykańskiej.
Źródło:
Polonia Journal; 2015, 1-2; 203-224
2083-3121
Pojawia się w:
Polonia Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ciało ludzkie i jego udział w szczęściu nieba – koncepcja Pseudo-Dionizego Areopagity wobec poglądów neoplatoników pogańskich
Human body and its participation in heavenly happiness – conception of Pseudo-Dionysius the Areopagite against the teaching of pagan neoplatonic philosophers
Autorzy:
Stępień, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/613861.pdf
Data publikacji:
2015
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Pseudo-Dionizy Areopagita
ciało
neoplatonizm
dusza
połączenie duszy z ciałem
Pseudo-Dionysius the Areopagite
body
Neoplatonism
soul
descent of the soul
Opis:
In seventh chapter of his On the Ecclesiastical Hierarchy Pseudo Dionysius the Areopagite treats on the ceremony of burial. While explaining the rites he makes a few remarks on the Christian understanding of the body and its fate after death, and how it is inconsistent with some pagan views on the matter. He discusses several opposite statements of the complete disintegration of the body, metempsychosis and seeing the life of the body after death exactly like the life on earth (On the Ecclesiastical Hierarchy VII 3, 1). This polemic is pointed against Neoplatonic philosophers who held such opinions, and to understand the difference between pagan and Christian view on the matter, the second part of the article considers the Neoplatonic view of the life after death. At Neoplatonic schools there were a different opinions of whether the embodiment is good or rather damaging to the intellectual soul. Philosophers like Plotinus and Porphyry explained descend of the soul as being evil, while Iamblichus and Damaskios thought otherwise. However there were points in which Neoplatonics were completely in agreement. All of them admitted that the happiness of the soul after death is possible only without the material body, and that the soul can reincarnate. Analysis of Neoplatonic view shows that the negative approach to the body is not the feature that could be ascribed to all Late Greek philosophers. Pseudo-Dionysius sees the problem in the Christian perspective. The soul at the moment of death does not loose completely the connection with the body and thus death does not mean the dissolution of the substance. However the new body that will be given to believers after resurrection will not be exactly the same with the earthly one.
Źródło:
Vox Patrum; 2015, 63; 199-216
0860-9411
2719-3586
Pojawia się w:
Vox Patrum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Continuous descent approach : noise test for Warsaw international airport
Autorzy:
Gągorowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/247891.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Continuous Descent Approach
CDA concept
aircraft type
air transport
demonstration test
noise pollution
noise environmental protection
Opis:
The noise generated by aircraft during departure and arrival flight operations continues to be significant problem at most major airports. Environmental impacts due to aviation operations in the vicinity of airports have become a serious concern to the community. A variety of techniques can be employed to reduce the noise impacts of aircraft. Continuous Descent Approach (CDA) is the new promising technique, which can significantly reduce noise impact by keeping aircraft higher and at lower engine thrust for longer by eliminating the level segments in conventional "step down" approaches. These procedures (implemented in different ways) are fixed routes that are vertically optimized. With the changing traffic, conditions and variable noise abatement rules the benefits of CDA operations are not yet fully realized. Actually, at many airports, CDA techniques are implemented for environmental improvements. This article presents the concept of optimized CDA. The modified flight procedure has been shown in measurement and analysis for Warsaw International Airport example. In this demonstration test, the procedure was shown to reduce the A-weighted noise level for the selected location along the flight path for different aircraft. Depending on aircraft type, the noise benefit from a CDA compared to a conventional approach was up to about 9.5 decibels (this change is noticeable to the human ear). Measurements have shown that Continuous Descent Approach have the potential for significant environmental benefits including reductions in noise.
Źródło:
Journal of KONES; 2012, 19, 2; 167-174
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convergence Analysis of Inverse Iterative Neural Networks with L₂ Penalty
Autorzy:
Wen, Y.
Wang, J.
Huang, B.
Zurada, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/108754.pdf
Data publikacji:
2016
Wydawca:
Społeczna Akademia Nauk w Łodzi
Tematy:
neural networks
gradient descent
inverse iterative
monotonicity
regularization
convergence
Opis:
The iterative inversion of neural networks has been used in solving problems of adaptive control due to its good performance of information processing. In this paper an iterative inversion neural network with L₂ penalty term has been presented trained by using the classical gradient descent method. We mainly focus on the theoretical analysis of this proposed algorithm such as monotonicity of error function, boundedness of input sequences and weak (strong) convergence behavior. For bounded property of inputs, we rigorously proved that the feasible solutions of input are restricted in a measurable field. The weak convergence means that the gradient of error function with respect to input tends to zero as the iterations go to infinity while the strong convergence stands for the iterative sequence of input vectors convergence to a fixed optimal point.
Źródło:
Journal of Applied Computer Science Methods; 2016, 8 No. 2; 85-98
1689-9636
Pojawia się w:
Journal of Applied Computer Science Methods
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy św. Augustyn był teistycznym ewolucjonistą?
Was St. Augustine a theistic evolutionist?
Autorzy:
Chaberek, Michał
Powiązania:
https://bibliotekanauki.pl/articles/431162.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
St. Augustine
Till H. van
theistic evolutionism
creationism
evolution
germinal principles
macroevolution
common descent
św. Augustyn
teistyczny ewolucjonizm
kreacjonizm
ewolucja
racje zalążkowe
makroewolucja
wspólne pochodzenie
Opis:
The article provides an answer to the question as to whether St. Augustine can be regarded as the father of the contemporary Christian interpretation of the doctrine of creation called “theistic evolution”. One example of theistic evolution can be found in “creation’s functional integrity” – a concept developed by the protestant theologian Howard van Till. A vast majority of contemporary Christian evolutionists find the origin of the idea of biological macroevolution in the works of the Bishop of Hippo. As a result, Augustine is supposed to be the first Christian evolutionist and his writings provide justification for contemporary evolutionary opinion amongst Christian scholars. The article shows crucial incompatibilities between the concepts of Augustine and the evolutionists; according to Augustine, only God could create different natures of the living beings. Moreover, all natural species were created simultaneously in the Beginning and their subsequent transformation is not possible. The article shows also how the ancient doctrine of spontaneous generation (present also in Augustine’s writings) has been manipulated to support the concept of chemical and biochemical evolution (abiogenesis). At the end, a brief evaluation of the Augustinian concept of creation, in the light of contemporary scientific knowledge, is presented.
Artykuł stanowi odpowiedź na pytanie, czy św. Augustyn może być uważany za ojca współczesnego nurtu interpretacji stworzenia w teologii chrześcijańskiej, zwanego teistycznym ewolucjonizmem. Przykład teistycznego ewolucjonizmu można znaleźć w koncepcji „funkcjonalnej integralności stworzenia” protestanckiego teologa Howarda van Tilla. Większość współczesnych ewolucjonistów chrześcijańskich dopatruje się pierwotnej wersji teorii makroewolucji biologicznej w dziełach biskupa Hippony. Artykuł omawia koncepcję stworzenia Augustyna, wskazując na kilka momentów niezgodności z teistycznym ewolucjonizmem, do których należą: przekonanie Augustyna, że tylko Bóg sam może tworzyć pełne natury bytów cielesnych, przekonanie, że wszystkie gatunki naturalne zostały stworzone na początku, oraz że transformizm gatunkowy nie jest możliwy. Ponadto artykuł wyjaśnia, w jaki sposób nadużywa się poglądu o spontanicznym rodzeniu się zwierząt niższych z martwej materii organicznej w celu poparcia poglądu o ewolucji chemicznej i biochemicznej (abiogenezy). Na końcu przedstawiona została zwięzła ocena Augustyńskiej koncepcji stworzenia w świetle współczesnej wiedzy o powstaniu świata.
Źródło:
Studia Philosophiae Christianae; 2013, 49, 1; 5-23
0585-5470
Pojawia się w:
Studia Philosophiae Christianae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czynniki niesprzyjające i chroniące w przebiegu kariery szkolnej uczniów imigrantów
Unfavourable and protective factors in school career of immigrant learners
Autorzy:
Rabczuk, Wiktor
Powiązania:
https://bibliotekanauki.pl/articles/1968077.pdf
Data publikacji:
2013-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
uczniowie pochodzenia imigranckiego
adaptacja szkolna
kapitał społeczny
czynniki chroniące
learners of immigrant descent
school adaptation
social capital
protective factors
Opis:
Artykuł ukazuje zasięg zjawiska imigracji i jej znaczenie społeczno- -ekonomiczne w krajach OECD oraz polepszenie w ostatniej dekadzie poziomu wykształcenia dzieci imigrantów. Jednak kształcenie dzieci imigrantów pozostaje nadal poważnym wyzwaniem dla systemów szkolnych. Są oni narażeni na stres kulturowy, toteż ich adaptacja szkolna jest utrudniona. Chociaż wywodzą się ze środowisk defaworyzowanych, osiągają jednak względnie lepsze wyniki akademickie, aniżeli populacja autochtoniczna o podobnym statusie społeczno- -ekonomicznym. Aby wyjaśnić to zjawisko, pożądane jest uwzględnienie pojęć resilience i kapitału społecznego. Termin kapitał społeczny pozwala wyeksponować relacje korzystne („dobry” kapitał społeczny) dla rozwoju kapitału ludzkiego, pojęcie zaś resilience umożliwia ujmowanie tych relacji jako czynników chroniących uczniów w sytuacjach niesprzyjających i trudnych. Zrelacjonowane badania szwajcarskich autorek, D. Bader i R. Fibbi, mieszczą się w nurcie badań nad fenomenem resilience. Artykuł kończy się refleksją autora o doniosłej roli normatywnego wymiaru kapitału kulturowego imigrantów (pochodzenia azjatyckiego), który w sposób szczególny przyczynia się do procesów pozytywnej adaptacji szkolnej i społecznej ich dzieci, powiększając zasoby czynników chroniących.
The article presents the range of immigration and its socio-economic significance in OECD countries as well as improvement in the quality of immigrant children’s education over the last decade. Yet, education of immigrants’ children still constitutes a serious challenge for school systems. These children are exposed to cultural stress, which results in hindrance in their school adaptation. Although they come from disadvantaged environments, they achieve relatively better academic results than the autochthonous population at a similar socio-economic status. What is needed to explain this phenomenon is taking into account the notion of resilience and of social capital. The notion of social capital allows for emphasizing favourable relations (‘good’ social capital) for the development of human capital, whereas the notion of resilience enables viewing these relations as factors protecting learners in unfavourable and difficult situations. The discussed studies of Swiss authoresses, D. Bader and R. Fibbi, are comprised in the research into the phenomenon of resilience. The article is completed with the author’s reflection on the crucial role of the normative dimension of cultural capital which immigrants (of Asian origin) possess and which facilitates the processes of positive school and social adaptation of children, in this way enlarging the resources of protective factors.
Źródło:
Edukacja Międzykulturowa; 2013, 2; 38-56
2299-4106
Pojawia się w:
Edukacja Międzykulturowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fast level set based algorithms using shape and topological sensitivity information
Autorzy:
Hintermuller, M.
Powiązania:
https://bibliotekanauki.pl/articles/970129.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
algorytm opadania
metoda Newtona
analiza wrażliwości
optymalizacja kształtu
optymalizacja topologiczna
descent algorithm
level set method
Newton method
sensitivity analysis
shape optimization
topology optimization
Opis:
A framework for descent algorithms using shape as well as topological sensitivity information is introduced. The concept of gradient-related descent velocities in shape optimization is defined, a corresponding algorithmic approach is developed, and a convergence analysis is provided. It is shown that for a particular choice of the bilinear form involved in the definition of gradient-related directions a shape Newton method can be obtain. The level set methodology is used for representing and updating the geometry during the iterations. In order to include topological changes in addition to merging and splitting of existing geometries, a descent algorithm based on topological sensitivity is proposed. The overall method utilizes the shape sensitivity and topological sensitivity based methods in a serial fashion. Finally, numerical results are presented.
Źródło:
Control and Cybernetics; 2005, 34, 1; 305-324
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In vitro culture of white lupin embryos as a stage for SSD technique
Autorzy:
Ogrodowicz, Piotr
Mikołajczak, Krzysztof
Kuczyńska, Anetta
Kaczmarek, Zygmunt
Ćwiek-Kupczyńska, Hanna
Surma, Maria
Adamski, Tadeusz
Święcicki, Wojciech
Barzyk, Paweł
Trzeciak, Renata
Kempa, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2148491.pdf
Data publikacji:
2021-03-31
Wydawca:
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:
embryo development
single seed descent technique
survival rate
temperature regimes
type of growth
white lupin
Opis:
White lupin is an important source of proteins, the content of which amounts to 36–40% in its seeds. Breeding of new varieties usually takes several years. The present study aimed to shorten the breeding cycle by applying the single-seed descent technique together with in vitro culture of embryos dissected from immature seeds. The effects of temperature on embryo development were studied in indeterminate vs. determinate varieties in in vitro culture using the following temperature regimes:(1) 8 °C; (2) 16 °C in the first week, then 8 °C; (3) 20 °C in the first week, then 20/18 °C; and (4) 16 °C throughout the culture period. The embryos were cultured on the standard Murashige and Skoog medium. The observed growth rate of plantlets as well as the survival of plants ex vitro showed that at lower temperatures (8–16 °C) the plants developed slowly, but their ex vitro survival rate was higher compared to those grown at a higher temperature (20 °C). In addition, the results indicated that the in vitro embryo development rate of determinate varieties is significantly lower than that of indeterminate varieties.
Źródło:
Polish Journal of Agronomy; 2021, 44; 9-14
2081-2787
Pojawia się w:
Polish Journal of Agronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Internal wave diffraction by a strip of an elastic plate on the surface of a stratified fluid
Autorzy:
Dolai, P.
Dolai, D. P.
Powiązania:
https://bibliotekanauki.pl/articles/265771.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
równanie Kleina-Gordona
płyn warstwowy
metoda Wienera-Hopfa
stratified fluid
Klein-Gordon equation
Wiener-Hopf technique
steepest descent method
Opis:
The problem of internal wave diffraction by a strip of an elastic plate of finite width present on the surface of an exponentially stratified liquid is investigated in this paper. Assuming linear theory, the problem is formulated in terms of a function related to the stream function describing the motion in the liquid. The related boundary value problem involves a hyperbolic type partial differential equation (PDE), known as the Klein Gordon equation. The method of Wiener-Hopf is utilized in the mathematical analysis to a slightly generalized boundary value problem (BVP) by introducing a small parameter, and the problem is solved approximately for large width of the plate. In the final results, this small parameter is made to tend to zero. The diffracted field is obtained in terms of integrals, which are then evaluated asymptotically in different regions for a large distance from the edges of the plate and the results are interpreted physically.
Źródło:
International Journal of Applied Mechanics and Engineering; 2013, 18, 1; 5-26
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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