Results for 'Yury Kovalchuk'

480 found
Order:
  1.  17
    From modulator to mediator: rapid effects of BDNF on ion channels.Christine R. Rose, Robert Blum, Karl W. Kafitz, Yury Kovalchuk & Arthur Konnerth - 2004 - Bioessays 26 (11):1185-1194.
    Neurotrophins (NTs) are {?AUTHOR} a family of structurally related, secreted proteins that regulate the survival, differentiation and maintenance of function of different populations of peripheral and central neurons.1,2 Among these, BDNF (brain‐derived neurotrophic factor) has drawn considerable interest because both its synthesis and secretion are increased by physiological levels of activity, indicating a unique role of this neurotrophin in coupling neuronal activity to structural and functional properties of neuronal circuits. In addition to its classical neurotrophic effects, which are evident within (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  2.  51
    (1 other version)Yuri Andropov: A new leader of russia.Yuri Glazov - 1983 - Studies in East European Thought 26 (3):173-215.
  3.  30
    Yuri K. Melvil.Yuri K. Melvil - 1960 - Atti Del XII Congresso Internazionale di Filosofia 3:493-496.
    No categories
    Direct download  
     
    Export citation  
     
    Bookmark  
  4. Knowing What It is Like and Testimony.Yuri Cath - 2019 - Australasian Journal of Philosophy 97 (1):105-120.
    It is often said that ‘what it is like’-knowledge cannot be acquired by consulting testimony or reading books [Lewis 1998; Paul 2014; 2015a]. However, people also routinely consult books like What It Is Like to Go to War [Marlantes 2014], and countless ‘what it is like’ articles and youtube videos, in the apparent hope of gaining knowledge about what it is like to have experiences they have not had themselves. This article examines this puzzle and tries to solve it by (...)
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark   21 citations  
  5.  25
    Automating petition classification in Brazil’s legal system: a two-step deep learning approach.Yuri D. R. Costa, Hugo Oliveira, Valério Nogueira, Lucas Massa, Xu Yang, Adriano Barbosa, Krerley Oliveira & Thales Vieira - forthcoming - Artificial Intelligence and Law.
    Automated classification of legal documents has been the subject of extensive research in recent years. However, this is still a challenging task for long documents, since it is difficult for a model to identify the most relevant information for classification. In this paper, we propose a two-stage supervised learning approach for the classification of petitions, a type of legal document that requests a court order. The proposed approach is based on a word-level encoder–decoder Seq2Seq deep neural network, such as a (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  6.  70
    Intuitionistic logic with strong negation.Yuri Gurevich - 1977 - Studia Logica 36 (1-2):49 - 59.
    This paper is a reaction to the following remark by grzegorczyk: "the compound sentences are not a product of experiment. they arise from reasoning. this concerns also negations; we see that the lemon is yellow, we do not see that it is not blue." generally, in science the truth is ascertained as indirectly as falsehood. an example: a litmus-paper is used to verify the sentence "the solution is acid." this approach gives rise to a (very intuitionistic indeed) conservative extension of (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   55 citations  
  7.  55
    Fixed-point extensions of first-order logic.Yuri Gurevich & Saharon Shelah - 1986 - Annals of Pure and Applied Logic 32:265-280.
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark   21 citations  
  8. Persistence and multilocation in spacetime.Yuri Balashov - 2008
    in D. Dieks (ed.), The Ontology of Spacetime, Vol. 2. Elsevier, forthcoming.
     
    Export citation  
     
    Bookmark   15 citations  
  9.  38
    Envisioning eternal empire : Chinese political thought of the Warring States era.Yuri Pines - 2009 - University of Hawaiʻi Press.
    This ambitious book looks into the reasons for the exceptional durability of the Chinese empire, which lasted for more than two millennia (221 B.C.E. - 1911 C.E.). Yuri Pines identifies the roots of the empire's longevity in the activities of thinkers of the Warring States period (453-221 B.C.E.), who, in their search for solutions to an ongoing political crisis, developed ideals, values, and perceptions that would become essential for the future imperial polity. In marked distinction to similar empires worldwide, the (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   18 citations  
  10. Uniformitarianism in cosmology: Background and philosophical implications of the steady-state theory.Yuri Balashov - 1994 - Studies in History and Philosophy of Science Part A 25 (6):933-958.
    Philosophical considerations have been essentially involved in the origin and development of the steady-state cosmological theory. These considerations include an explicit uniformitarian methodology and implicit metaphysical views concerning the status of natural laws in a changing universe. I shall examine the foundations of SST by reconstructing its early history. Whereas the strong uniformitarian methodology of SST found no support in the subsequent development of cosmology, the idea of a possible influence the global structure of the universe may have on the (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   13 citations  
  11. The decision problem for branching time logic.Yuri Gurevich & Saharon Shelah - 1985 - Journal of Symbolic Logic 50 (3):668-681.
    The theory of trees with additional unary predicates and quantification over nodes and branches embraces a rich branching time logic. This theory was reduced in the companion paper to the first-order theory of binary, bounded, well-founded trees with additional unary predicates. Here we prove the decidability of the latter theory.
    Direct download (8 more)  
     
    Export citation  
     
    Bookmark   14 citations  
  12.  33
    (1 other version)Persistence and Spacetime.Yuri Balashov - 2009 - Oxford and New York: Oxford University Press UK.
    Yuri Balashov sets out major rival views of persistence--endurance, perdurance, and exdurance--in a spacetime framework and proceeds to investigate the implications of Einstein's theory of relativity for the debate about persistence. His overall conclusion--that relativistic considerations favour four-dimensionalism over three-dimensionalism--is hardly surprising. It is, however, anything but trivial. Contrary to a common misconception, there is no straightforward argument from relativity to four-dimensionalism. The issues involved are complex, and the debate is closely entangled with a number of other philosophical disputes, including (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   31 citations  
  13. Persistence and Space-Time.Yuri Balashov - 2000 - The Monist 83 (3):321-340.
    Although considerations based on contemporary space-time theories, such as special and general relativity, seem highly relevant to the debate about persistence, their significance has not been duly appreciated. My goal in this paper is twofold: (1) to reformulate the rival positions in the debate (i.e., endurantism [three-dimensionalism] and perdurantism [four-dimensionalism, the doctrine of temporal parts]) in the framework of special relativistic space-time; and (2) to argue that, when so reformulated, perdurantism exhibits explanatory advantages over endurantism. The argument builds on the (...)
    Direct download (6 more)  
     
    Export citation  
     
    Bookmark   58 citations  
  14. Revisionary intellectualism and Gettier.Yuri Cath - 2015 - Philosophical Studies 172 (1):7-27.
    How should intellectualists respond to apparent Gettier-style counterexamples? Stanley offers an orthodox response which rejects the claim that the subjects in such scenarios possess knowledge-how. I argue that intellectualists should embrace a revisionary response according to which knowledge-how is a distinctively practical species of knowledge-that that is compatible with Gettier-style luck.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   43 citations  
  15.  18
    Expanded theory of ordered Abelian groups.Yuri Gurevich - 1977 - Annals of Mathematical Logic 12 (2):193-228.
  16. Enduring and perduring objects in Minkowski space-time.Yuri Balashov - 2000 - Philosophical Studies 99 (2):129-166.
    I examine the issue of persistence over time in thecontext of the special theory of relativity (SR). Thefour-dimensional ontology of perduring objects isclearly favored by SR. But it is a different questionif and to what extent this ontology is required, andthe rival endurantist ontology ruled out, by thistheory. In addressing this question, I take theessential idea of endurantism, that objects are whollypresent at single moments of time, and argue that itcommits one to unacceptable conclusions regardingcoexistence, in the context of SR. (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   46 citations  
  17.  12
    The War in Ukraine: Challenges to Just War Doctrines in Eastern Orthodoxy.Yuri Stoyanov - 2024 - Studies in Christian Ethics 37 (3):669-692.
    The sequence and escalation of Russian–Ukrainian political and military conflicts since 2014, culminating in Russia's invasion of Ukraine in February 2022, have reopened interest in and debates on just war theory and practice in general and specifically in historic and modern Eastern Orthodox cultures and Orthodox-majority states. These debates have significant repercussions in areas like church–state and church–military relations in these cultures; ecclesial involvement in these conflicts has varied from war-justification rhetoric (in the case of the Russian Orthodox Church) to (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  18. Knowing How Without Knowing That.Yuri Cath - 2011 - In John Bengson & Marc A. Moffett (eds.), Knowing How: Essays on Knowledge, Mind, and Action. Oxford, England: Oxford University Press USA. pp. 113.
    In this paper I develop three different arguments against the thesis that knowledge-how is a kind of knowledge-that. Knowledge-that is widely thought to be subject to an anti-luck condition, a justified or warranted belief condition, and a belief condition, respectively. The arguments I give suggest that if either of these standard assumptions is correct then knowledge-how is not a kind of knowledge-that. In closing I identify a possible alternative to the standard Rylean and intellectualist accounts of knowledge-how. This alternative view (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   66 citations  
  19.  19
    Evolution of the Concept "Nation" and its Modern Interpretations.Yury D. Granin - 2015 - European Journal of Philosophical Research 3 (1):15-26.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  20. Reflective Equilibrium.Yuri Cath - 2016 - In Herman Cappelen, Tamar Gendler & John Hawthorne (eds.), The Oxford Handbook of Philosophical Methodology. Oxford, United Kingdom: Oxford University Press. pp. 213-230.
    This article examines the method of reflective equilibrium (RE) and its role in philosophical inquiry. It begins with an overview of RE before discussing some of the subtleties involved in its interpretation, including challenges to the standard assumption that RE is a form of coherentism. It then evaluates some of the main objections to RE, in particular, the criticism that this method generates unreasonable beliefs. It concludes by considering how RE relates to recent debates about the role of intuitions in (...)
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   31 citations  
  21.  35
    Attenuated sensitivity to the emotions of others by insular lesion.Yuri Terasawa, Yoshiko Kurosaki, Yukio Ibata, Yoshiya Moriguchi & Satoshi Umeda - 2015 - Frontiers in Psychology 6.
    Direct download (5 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  22.  31
    Charlie Chaplin and His Shadows: On Laws of Fortuity in Art.Yuri Tsivian - 2014 - Critical Inquiry 40 (3):71-84.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  23. (1 other version)Times of Our Lives: Negotiating the Presence of Experience.Yuri Balashov - 2005 - American Philosophical Quarterly 42 (4):295 - 309.
    On the B-theory of time, the experiences we have throughout our conscious lives have the same ontological status: they all tenselessly occur at their respective dates. But we do not seem to experience all of them on the same footing. In fact, we tend to believe that only our present experiences are real, to the exclusion of the past and future ones. The B-theorist has to maintain that this belief is an illusion and explain the origin of the illusion. The (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   25 citations  
  24. Laws of Nature and the Universe: Philosophical Implications of Modern Cosmology.Yuri V. Balashov - 1998 - Dissertation, University of Notre Dame
    Are the laws of nature real? Do they belong to the world or merely reflect the way we speak about it? If they are real, what sort of entity are they? This study contributes to the ongoing discussion of these questions by emphasizing the importance of a cosmological perspective on them. I argue that the evidence coming from modern evolutionary cosmology presents difficulties for certain currently fashionable philosophical accounts of laws, in particular, for the Dretske-Tooley-Armstrong theory. I defend, in light (...)
     
    Export citation  
     
    Bookmark  
  25.  14
    Інноваційний потенціал наукових установ україни: Філософсько-правовий аспект.A. Yu Kovalchuk - 2019 - Гуманітарний Вісник Запорізької Державної Інженерної Академії 75:205-215.
    У статті, на прикладі дослідження наукової тематики кафедри, висвітлюється можливі механізми оцінки інноваційного потенціалу наукової установ та її складових частин. Підкреслюється необхідність розвитку науки, як життєво необхідного фактору для нормальної роботи всіх сфер держави, а також створення найбільш комфортних соціально-побутових умов для населення, відповідно до європейського рівня розвитку суспільства. Метою дослідження є розробка методичних положень щодо оцінки інноваційного потенціалу наукової діяльності наукових установ, як фактора збільшення інвестиційної вартості науки на ринку наукових послуг України. Завданнями є: узагальнення особливостей інноваційного потенціалу наукових (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  26.  32
    A Conceptual Approach to Complex Model Management with Generalized Modelling Patterns and Evolutionary Identification.Sergey V. Kovalchuk, Oleg G. Metsker, Anastasia A. Funkner, Ilia O. Kisliakovskii, Nikolay O. Nikitin, Anna V. Kalyuzhnaya, Danila A. Vaganov & Klavdiya O. Bochenina - 2018 - Complexity 2018:1-15.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  27. The founder as a saint: The image of Justinian I in the great church of st Sophia.Kateryna Kovalchuk - 2007 - Byzantion 77:205-238.
    No categories
     
    Export citation  
     
    Bookmark  
  28.  34
    Interoceptive sensitivity predicts sensitivity to the emotions of others.Yuri Terasawa, Yoshiya Moriguchi, Saiko Tochizawa & Satoshi Umeda - 2014 - Cognition and Emotion 28 (8):1435-1448.
  29.  29
    Lexical Changes in Zhanguo Texts.Yuri Pines - 2002 - Journal of the American Oriental Society 122 (4):691-705.
  30.  11
    The structures of everyday life in the design of religious identity.Yuri Boreyko - 2015 - Ukrainian Religious Studies 74:5-13.
    The structures of everyday life, where religious identity is constructed, are analysed in the article of Boreyko Yuri Grigorovich «The structures of everyday life in the design of religious identity». Determined that the basis of personal and group religious identity are mental structures, symbolic actions, rituals, language.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  31.  9
    Sanctity phenomenon of St. Feodosiy Pecherskyi in context of holy persons life.Natalia Kovalchuk - 2015 - Ukrainian Religious Studies 74:170-176.
    In the article of Natalia Kovalchuk «Sanctity phenomenon of St. Feodosiy Pecherskyi in context of holy persons life» the spiritual way of St. Feodosiy Pecherksyi as a search of time, which bring him closer to the sanctity and search of his personal dimension as a holy place are regarded. Through the analysis of food and cloth, which connect St. Feodosiy with world, his life is researched. Spiritual way of St. Feodosiy Pecherskyi brings him closer to the sanctity.
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  32. Expanding the Client’s Perspective.Yuri Cath - 2023 - Philosophical Quarterly 73 (3):701-721.
    Hawley introduced the idea of the client's perspective on knowledge, which she used to illuminate knowing-how and cases of epistemic injustice involving knowing-how. In this paper, I explore how Hawley's idea might be used to illuminate not only knowing-how, but other forms of knowledge that, like knowing-how, are often claimed to be distinct from mere knowing-that, focusing on the case studies of moral understanding and ‘what it is like’-knowledge.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  33.  59
    Becoming a Surrogate Online:" Message Board" Surrogacy in Thailand.Yuri Hibino & Yosuke Shimazono - 2013 - Asian Bioethics Review 5 (1):56-72.
  34.  16
    Explicitly Slow, Implicitly Fast, or the Other Way Around? Brain Mechanisms for Word Acquisition.Yury Shtyrov, Alexander Kirsanov & Olga Shcherbakova - 2019 - Frontiers in Human Neuroscience 13.
  35.  56
    Quasi-matrix logic as a paraconsistent logic for dubitable information.Yury V. Ivlev - 2000 - Logic and Logical Philosophy 8:91.
  36.  38
    Non-commercial Surrogacy in Thailand: Ethical, Legal, and Social Implications in Local and Global Contexts.Yuri Hibino - 2020 - Asian Bioethics Review 12 (2):135-147.
    In this paper, the ethical, legal, and social implications of Thailand’s surrogacy regulations from both domestic and global perspectives are explored. Surrogacy tourism in Thailand has expanded since India strengthened its visa regulations in 2012. In 2015, in the wake of a major scandal surrounding the abandonment of a surrogate child by its foreign intended parents, a law prohibiting the practice of surrogacy for commercial purposes was enacted. Consequently, a complete ban on surrogacy tourism was imposed. However, some Thai physicians (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  37.  48
    The decision problem for standard classes.Yuri Gurevich - 1976 - Journal of Symbolic Logic 41 (2):460-464.
  38.  21
    Non-Well-Founded Proofs for the Grzegorczyk Modal Logic.Yury Savateev & Daniyar Shamkanov - 2021 - Review of Symbolic Logic 14 (1):22-50.
    We present a sequent calculus for the Grzegorczyk modal logic$\mathsf {Grz}$allowing cyclic and other non-well-founded proofs and obtain the cut-elimination theorem for it by constructing a continuous cut-elimination mapping acting on these proofs. As an application, we establish the Lyndon interpolation property for the logic$\mathsf {Grz}$proof-theoretically.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  39.  66
    Information-Hierarchical Organization of Natural Systems II: Futures of Man-Biosphere Interactions and Climate Control.Yuri B. Kirsta & Vlada Yu Kirsta - 2010 - World Futures 66 (8):537-556.
    (2010). Information-Hierarchical Organization of Natural Systems II: Futures of Man–Biosphere Interactions and Climate Control. World Futures: Vol. 66, No. 8, pp. 537-556.
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  40. About stage universalism.Yuri Balashov - 2007 - Philosophical Quarterly 57 (226):21–39.
    Most four-dimensionalists, including both worm and stage theorists, endorse mereological universalism, the thesis that any class of objects has a fusion. But the marriage of fourdimensionalism and universalism is unfortunate and unprofitable: it creates a recalcitrant problem for stage theory’s account of lingering properties, such as writing ‘War and Piece’ and traveling across the tennis court, which take time to be instantiated. This makes it necessary to impose a natural restriction on diachronic composition.
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   8 citations  
  41.  37
    Scale‐free networks in biology: new insights into the fundamentals of evolution?Yuri I. Wolf, Georgy Karev & Eugene V. Koonin - 2002 - Bioessays 24 (2):105-109.
    Scale-free network models describe many natural and social phenomena. In particular, networks of interacting components of a living cell were shown to possess scale-free properties. A recent study(1) compares the system-level properties of metabolic and information networks in 43 archaeal, bacterial and eukaryal species and claims that the scale-free organization of these networks is more conserved during evolution than their content. BioEssays 24:105–109, 2002. Published 2002 Wiley Periodicals, Inc.
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   5 citations  
  42. Intellectualism and Testimony.Yuri Cath - 2017 - Analysis 77 (2):1-9.
    Knowledge-how often appears to be more difficult to transmit by testimony than knowledge-that and knowledge-wh. Some philosophers have argued that this difference provides us with an important objection to intellectualism—the view that knowledge-how is a species of knowledge-that. This article defends intellectualism against these testimony-based objections.
    Direct download (6 more)  
     
    Export citation  
     
    Bookmark   10 citations  
  43.  51
    Genome reduction as the dominant mode of evolution.Yuri I. Wolf & Eugene V. Koonin - 2013 - Bioessays 35 (9):829-837.
    A common belief is that evolution generally proceeds towards greater complexity at both the organismal and the genomic level, numerous examples of reductive evolution of parasites and symbionts notwithstanding. However, recent evolutionary reconstructions challenge this notion. Two notable examples are the reconstruction of the complex archaeal ancestor and the intron‐rich ancestor of eukaryotes. In both cases, evolution in most of the lineages was apparently dominated by extensive loss of genes and introns, respectively. These and many other cases of reductive evolution (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   10 citations  
  44. Decision problem for separated distributive lattices.Yuri Gurevich - 1983 - Journal of Symbolic Logic 48 (1):193-196.
    It is well known that for all recursively enumerable sets X 1 , X 2 there are disjoint recursively enumerable sets Y 1 , Y 2 such that $Y_1 \subseteq X_1, Y_2 \subseteq X_2$ and Y 1 ∪ Y 2 = X 1 ∪ X 2 . Alistair Lachlan called distributive lattices satisfying this property separated. He proved that the first-order theory of finite separated distributive lattices is decidable. We prove here that the first-order theory of all separated distributive lattices (...)
    Direct download (8 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  45.  27
    A Four-Valued Dynamic Epistemic Logic.Yuri David Santos - 2020 - Journal of Logic, Language and Information 29 (4):451-489.
    Epistemic logic is usually employed to model two aspects of a situation: the factual and the epistemic aspects. Truth, however, is not always attainable, and in many cases we are forced to reason only with whatever information is available to us. In this paper, we will explore a four-valued epistemic logic designed to deal with these situations, where agents have only knowledge about the available information, which can be incomplete or conflicting, but not explicitly about facts. This layer of available (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  46. Can a biologist fix a radio?—Or, what I learned while studying apoptosis.Yuri Lazebnik - 2002 - Cancer Cell 2:179-182.
    Direct download  
     
    Export citation  
     
    Bookmark   20 citations  
  47. Pegs, boards, and relativistic perdurance.Yuri Balashov - 2009 - Pacific Philosophical Quarterly 90 (2):167-175.
    In an earlier work I developed an argument favoring one view of persistence (viz., perdurance) over its rivals, based on considerations of the relativity of three-dimensional spatial shapes of physical objects in Minkowski spacetime. The argument has since come under criticism (in the works of Theodore Sider, Kristie Miller, Ian Gibson, Oliver Pooley, and Thomas Sattig). Two related topics, explanatory virtues and explanatory relevance, are central to these critical discussions. In this paper I deal with these topics directly and respond (...)
    Direct download (2 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  48.  48
    Interpreting second-order logic in the monadic theory of order.Yuri Gurevich & Saharon Shelah - 1983 - Journal of Symbolic Logic 48 (3):816-828.
    Under a weak set-theoretic assumption we interpret second-order logic in the monadic theory of order.
    Direct download (7 more)  
     
    Export citation  
     
    Bookmark   6 citations  
  49. Regarding a Regress.Yuri Cath - 2013 - Pacific Philosophical Quarterly 94 (3):358-388.
    Is there a successful regress argument against intellectualism? In this article I defend the negative answer. I begin by defending Stanley and Williamson's (2001) critique of the contemplation regress against Noë (2005). I then identify a new argument – the employment regress – that is designed to succeed where the contemplation regress fails, and which I take to be the most basic and plausible form of a regress argument against intellectualism. However, I argue that the employment regress still fails. Drawing (...)
    Direct download (4 more)  
     
    Export citation  
     
    Bookmark   13 citations  
  50. Syriac philosophy : select bibliography.Yury Arzhanov - 2019 - In Emiliano Fiori & Henri Hugonnard-Roche (eds.), La philosophie en syriaque. Paris: Geuthner.
    No categories
     
    Export citation  
     
    Bookmark  
1 — 50 / 480