123,445 research outputs found
Creativity M. Rudenko in Philosophical Discourse Twentieth Century
No full textУ статті проаналізовано науково-фантастичні та художні романи М. Руденка і доведено, що твори належать до жанру філософського роману. Аналіз основних філософських ідей М. Руденка показує, що митець у своїх творах понад усе ставить Людину. Основна тема художніх творів автора – пошук сенсу людського існування. У науково-фантастичних романах автора реалізація філософських ідей проходить як апологія авторської філософської теорії. Окремим питанням розглянуто філософську працю М. Руденка «Гносис і сучасність», де автор подає на розсуд читачеві власну філософську теорію світобудови.In the article explores the science-fiction novels and artwork N. Rudenko and proved that the works belong to the genre of the philosophical novel. Analysis of the main philosophical ideas of Rudenko shows the artist in his work above all became a man . The main theme of fiction author - search for the meaning of human existence. In science fiction novels by the realization of philosophical ideas is how the author's apology philosophical theory. Another issue deals with the philosophical work of M. Rudenko «Gnosis and Modernity», where the author takes the reader to the discretion of his own philosophical theory of the universe
Imaging single cells in a beam of live cyanobacteria with an X-ray laser
No full textCitation: van der Schot, G., Svenda, M., Maia, F., Hantke, M., DePonte, D. P., Seibert, M. M., . . . Ekeberg, T. (2015). Imaging single cells in a beam of live cyanobacteria with an X-ray laser. Nature Communications, 6, 9. doi:10.1038/ncomms6704There exists a conspicuous gap of knowledge about the organization of life at mesoscopic levels. Ultra-fast coherent diffractive imaging with X-ray free-electron lasers can probe structures at the relevant length scales and may reach sub-nanometer resolution on micron-sized living cells. Here we show that we can introduce a beam of aerosolised cyanobacteria into the focus of the Linac Coherent Light Source and record diffraction patterns from individual living cells at very low noise levels and at high hit ratios. We obtain two-dimensional projection images directly from the diffraction patterns, and present the results as synthetic X-ray Nomarski images calculated from the complex-valued reconstructions. We further demonstrate that it is possible to record diffraction data to nanometer resolution on live cells with X-ray lasers. Extension to sub-nanometer resolution is within reach, although improvements in pulse parameters and X-ray area detectors will be necessary to unlock this potential.Additional Authors: Almeida, N. F.;Odic, D.;Hasse, D.;Carlsson, G. H.;Larsson, D. S. D.;Barty, A.;Martin, A. V.;Schorb, S.;Bostedt, C.;Bozek, J. D.;Rolles, D.;Rudenko, A.;Epp, S.;Foucar, L.;Rudek, B.;Hartmann, R.;Kimmel, N.;Holl, P.;Englert, L.;Loh, N. T. D.;Chapman, H. N.;Andersson, I.;Hajdu, J.;Ekeberg, T
Modern automation trends in the context of remote work of enterprises
No full textRudenko N. Modern automation trends in the context of remote work of enterprises / N. Rudenko, M. Kuzmin // Тиждень науки-2023. Електротехнічний факультет. Тези доповідей науково-технічної конференції, Запоріжжя, 24-28 квітня 2023 р. / Редкол. : В. Шаломєєв (відпов. ред.) Електрон. дані. – Запоріжжя : НУ «Запорізька політехніка», 2023. – С. 438-440
Three-Dimensional Reconstruction of the Giant Mimivirus Particle with an X-Ray Free-Electron Laser
No full textCitation: Ekeberg, T., Svenda, M., Abergel, C., Maia, F., Seltzer, V., Claverie, J. M., . . . Hajdu, J. (2015). Three-Dimensional Reconstruction of the Giant Mimivirus Particle with an X-Ray Free-Electron Laser. Physical Review Letters, 114(9), 6. doi:10.1103/PhysRevLett.114.098102We present a proof-of-concept three-dimensional reconstruction of the giant mimivirus particle from experimentally measured diffraction patterns from an x-ray free-electron laser. Three-dimensional imaging requires the assembly of many two-dimensional patterns into an internally consistent Fourier volume. Since each particle is randomly oriented when exposed to the x-ray pulse, relative orientations have to be retrieved from the diffraction data alone. We achieve this with a modified version of the expand, maximize and compress algorithm and validate our result using new methods.Additional Authors: Andersson, I.;Loh, N. D.;Martin, A. V.;Chapman, H.;Bostedt, C.;Bozek, J. D.;Ferguson, K. R.;Krzywinski, J.;Epp, S. W.;Rolles, D.;Rudenko, A.;Hartmann, R.;Kimmel, N.;Hajdu, J
Multicommodity Multicast, Wireless and Fast
No full textWe study rumor spreading in graphs, specifically multicommodity multicast problem under the wireless model: given source-destination pairs in the graph, one needs to find the fastest schedule to transfer information from each source to the corresponding destination. Under the wireless model, nodes can transmit to any subset of their neighbors in synchronous time steps, as long as they either transmit or receive from at most one transmitter during the same time step. We improve approximation ratio for this problem from O~(n^(2/3)) to O~(n^((1/2) + epsilon)) on n-node graphs. We also design an algorithm that satisfies p given demand pairs in O(OPT + p) steps, where OPT is the length of an optimal schedule, by reducing it to the well-studied packet routing problem. In the case where underlying graph is an n-node tree, we improve the previously best-known approximation ratio of O((log n)/(log log n)) to 3. One consequence of our proof is a simple constructive rule for optimal broadcasting in a tree under a widely studied telephone model
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