179,726 research outputs found
(Table 1) Composition of marine aerosols collected along the route of R/V Akademik Fedorov in the central east Atlantic
No full text(Table 1) Composition of marine aerosols collected along the route of R/V Akademik Fedorov in the central east Atlanti
Neural model for multi-stability in visual action recognition
No full textGiese MA, Fedorov L, Vogels R. Neural model for multi-stability in visual action recognition. BMC Neuroscience. 2015;16(Suppl 1): P279
Millennial Variability in an Idealized Ocean Model: Predicting the AMOC Regime Shifts
No full textA salient feature of paleorecords of the last glacial interval in the North Atlantic is pronounced millennial variability, commonly known as Dansgaard–Oeschger events. It is believed that these events are related to variations in the Atlantic meridional overturning circulation and heat transport. Here, the authors formulate a new low-order model, based on the Howard–Malkus loop representation of ocean circulation, capable of reproducing millennial variability and its chaotic dynamics realistically. It is shown that even in this chaotic model changes in the state of the meridional overturning circulation are predictable. Accordingly, the authors define two predictive indices which give accurate predictions for the time the circulation should remain in the on phase and then stay in the subsequent off phase. These indices depend mainly on ocean stratification and describe the linear growth of small perturbations in the system. Thus, monitoring particular indices of the ocean state could help predict a potential shutdown of the overturning circulation
Development of a VR simulator for learning algorithmization
No full textFedorov V. Ye. Development of a VR simulator for learning algorithmization / V. Ye. Fedorov, Ye. R. Kim // Інформаційні технології і автоматизація – 2022 : матеріали XV Міжнар. наук.-практ. конф., Одеса, 20–21 жовт. 2022 р. / Одес. нац. технол. ун-т. Ін-т комп'ютер. систем і технологій "Індустрія 4.0" ім. П. Н. Платонова ; орг. ком.: Б. В. Єгоров (голова) та ін. – Одеса, 2022. – P. 98–100 : fig. – Ref.: 4 tit.The paper considers the use of virtual reality technologies for learning algorithmization. The
idea of representing the algorithm in the form of trains and railways is proposed. A UML class
diagram has been developed
E. S. Fedorov Promoting the Russian-German Scientific Interrelationship
No full textAt the dawn of crystal structure analysis, the close personal contact between researchers in Russia and Germany, well documented in the “Zeitschrift für Krystallographie und Mineralogie”, contributed significantly to the evolution of our present knowledge of the crystalline state. The impact of the Russian crystallographer E. S. Fedorov upon German scientists such as A. Schoenflies and P. Groth and the effect of these contacts for Fedorov are highlighted hundred years after the death of the latter. A creative exchange of ideas paved the way for the analysis of crystal structures with the aid of X-ray diffraction
Topological Imbert-Fedorov Shift in Weyl Semimetals
No full textThe Goos-Hanchen (GH) shift and the Imbert-Fedorov (IF) shift are optical phenomena which describe the longitudinal and transverse lateral shifts at the reflection interface, respectively. Here, we predict the GH and IF shifts in Weyl semimetals (WSMs)-a promising material harboring low energy Weyl fermions, a massless fermionic cousin of photons. Our results show that the GH shift in WSMs is valley independent, which is analogous to that discovered in a 2D relativistic material-graphene. However, the IF shift has never been explored in nonoptical systems, and here we show that it is valley dependent. Furthermore, we find that the IF shift actually originates from the topological effect of the system. Experimentally, the topological IF shift can be utilized to characterize the Weyl semimetals, design valleytronic devices of high efficiency, and measure the Berry curvature.NBRP of China [2015CB921102, 2014CB920901, 2012CB921303, 2012CB821402]; NSF-China [11534001, 11274364, 11374219, 11504008]; NSF of Jiangsu province [BK20130283]SCI(E)[email protected]; [email protected]
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Object-oriented approach when developing computer games on the example of the game "Chess"
No full textFedorov V. Object-oriented approach when developing computer games on the example of the game "Chess" / V. Fedorov, K. Konovalov, Ye. R. Kim // Комп'ютерні ігри та мультимедіа як інноваційний підхід до комунікації : матеріали II Всеукр. наук.-техн. конф. молодих вчених, аспірантів та студентів, Одеса, 29–30 верес. 2022 р. / Одес. нац. технол. ун-т. Навч.-наук. ін-т комп`ют. систем і технологій "Індустрія 4.0" ім. П. М. Платонова ; ред. С. В. Котлик ; орг. ком.: Б. В. Єгоров (голова) та ін. – Одеса : ОНТУ, 2022. – P. 163–166 : fig. – Ref.: 3 tit.The article discusses the creation of a game on the Unity game engine. An object-oriented
approach to the development of a computer game is considered and the main methods of the main
class of the computer game "Chess" are described
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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