728 research outputs found
Работа в советской авиапромышленности. Из воспоминаний Г.А. Черемухина
Get PDFPublished by N.G. Georguiyeva This is a publication of an excerpt from the G.A. Cheremukhin's memoirs «The work in the aircraft industry» (1921-2009). He was a famous aircraft designer noted both in Russia and abroad. This fragment contains the previously little known information on the beginning of the creation of a strategic bomber TU-4 in 1945-1947. N.G. Georgieva prepared this publication on the basis of the manuscript of his memoirs. The preface and footnotes contain biographic data on people who were mentioned in the memoirs and who were working together with the author of the memoirs.Публикация отрывка из воспоминаний «Работа в советской авиапромышленности» Г.А. Черемухина (1921-2009) - известного в России и за рубежом российского авиаконструктора. Приведенный отрывок содержит малоизвестную информацию о начале создания в 1945-1947 гг. стратегического бомбардировщика Ту-4. Публикация подготовлена Н.Г. Георгиевой по рукописи воспоминаний. Введение и примечания содержат биографические сведения об упомянутых в тексте мемуаров лицах, работавших с автором воспоминаний
PUBLICATIONS OF URAL FORESTER N.G. MALGIN IN THE “MINING JOURNAL” (1860s)
Get PDFАвтор реконструирует и интерпретирует идеи известного уральского лесничего XIX в. Н.Г. Мальгина о проблемах и перспективах развития лесного дела на горнозаводском Урале.The author reconstructs and interprets the ideas of the famous Ural forester of the 19th century N.G. Malgin about the problems and prospects for the development of forestry in the mining plant Urals
The challenges of machine translation of academic publications
No full textClear translation remains a major challenge to better communication and understanding of the international academic literature, despite advances in Machine Translation (MT). Automatic translation systems which captured the detail and the sense of any manuscript in any language for a reader from any other linguistic background would find global applications.In this article, we discuss the current opportunities and constraints to the wider use of machine translation and computer-assisted human translation (CAT). At the present stage of technology development, these instruments offer a number of advantages to specialists working with scientific texts. These include the facility to skim and scan large amounts of information in foreign languages, and to act as digital dictionaries, thesauri and encyclopedias. Word-to-word and phrase-to-phrase translation between many languages and scripts is now well advanced. The availability of modern machine translation has therefore changed the work of specialist scientific translators, placing greater emphasis on more advanced text and sense editing skills. However, machine translation is still challenged by the nuances of language and culture from one society to another, particularlyin the freestyle literature of the arts and humanities. Scientific papers are generally much more structured, but the quality of machine translation still largely depends on the quality of the source text. This varies considerably between different scientific disciplines and from one author to another. The most advanced translation systems are making steady progress. It is timely to revisit traditional training programmes in the field of written translation to focus on the development of higher-level research competencies, such as terminology search, and so to make best use of evolving machine translation technologies. More widely, we consider that there is a challenge across the higher education systems in all countries to develop a simple, clear and consistent “international” writing style to assist fast, reliable and low-cost machine translation and hence to advance mutual understanding across the global scientific literature
Early work of N.G. (Dick) de Bruijn in analysis and some of my own
No full textThere are parallels between de Bruijn’s early work in analysis and that of the author. However, Dick’s work soon became much broader and deeper. While the present paper reviews several topics of common interest, its main content is a short version of Dick’s important article related to Riemann’s Hypothesis, entitled ‘The roots of trigonometric integrals’ [N.G. de Bruijn, The roots of trigonometric integrals, Duke Math. J. 17 (1950) 197-226]. The associated ‘de Bruijn-Newman constant’ is also discussed
A Review of Network Modeling and Services Integration in Peer-to-Peer Electricity Markets
No full textEngaging small actors in the electricity market through peer-to-peer (P2P) trading is a developing field of research. Despite the numerous approaches that have been proposed, a number of questions remain open. An important challenge is related to the integration of the distribution network constraints and the role of network operators in these new market models. In this paper, advancements made in this area are reviewed. Relevant methodologies that have been proposed in the technical literature are classified based on the market model, the network modeling approach, as well as the inclusion of an additional market structure for procuring ancillary services
Monograph review: Valeeva N.G. Chistopol county zemstvo of the Kazan province (1865–1914)
No full textThe article gives an overview of the monograph of N.G. Valeeva Chistopol County Zemstvo of the Kazan province (1865–1914). Being a study of local lore in the book, at the same time, questions related to the institute of zemstvo self-government are raised. Using the example of the zemstvo of one of the largest districts of the Kazan province, the mechanism of the functioning of local government is presented. Particular attention is paid to Zemstvo events in the field of medicine, education and agriculture. The author attaches great importance to the personality factor and, applying an anthropological approach, shows the influence of individual outstanding zemstvo people on the development of the county
Optimal procurement of contingency and load following reserves by demand side resources under wind-power generation uncertainty
No full textSystem operators must consider events that cause disturbances in the balance between the output of the generators and the load demand in their short-term operations. Transmission line failures, generating unit outages, and intrahour load deviations are such events. The means of confronting them is the scheduling and the deployment of reserves on a market basis. On top of these factors, the increasing penetration of renewables and especially wind-power generation has increased the frequency of deployment and the magnitude of required reserves. Traditionally, reserves have been procured by appropriately adjusting the output of the generating units; however, a broad range of demand-side resources are also qualified to provide ancillary services. The subject of this chapter is the development of a two-stage stochastic joint energy and reserve market structure that incorporates demand-side resources in order to procure the required reserve services in a reliable and economically optimal manner
Optimal procurement of contingency and load following reserves by demand side resources under wind-power generation uncertainty
No full text\u3cp\u3eSystem operators must consider events that cause disturbances in the balance between the output of the generators and the load demand in their short-term operations. Transmission line failures, generating unit outages, and intrahour load deviations are such events. The means of confronting them is the scheduling and the deployment of reserves on a market basis. On top of these factors, the increasing penetration of renewables and especially wind-power generation has increased the frequency of deployment and the magnitude of required reserves. Traditionally, reserves have been procured by appropriately adjusting the output of the generating units; however, a broad range of demand-side resources are also qualified to provide ancillary services. The subject of this chapter is the development of a two-stage stochastic joint energy and reserve market structure that incorporates demand-side resources in order to procure the required reserve services in a reliable and economically optimal manner.\u3c/p\u3
Transactive Energy for Flexible Prosumers Using Algorithmic Game Theory
Get PDFIn modern smart grids, the focus is increasingly shifted towards distributed energy resources and flexible electricity assets owned by prosumers. A system with high penetration of flexible prosumers, has a very large number of variables and constraints, while a lot of the information is local and non-observable. Decomposition methods and local problem solving is considered a promising approach for such settings, particularly when the implementation of a decomposition method features a market-based analogy, i.e. it can be implemented in a Transactive Energy fashion. In this paper we present an auction-theoretic scheme for a setting with non-convex prosumer models and resource constraints. The scheme is evaluated on a particular case study and its scalability and efficiency properties are tested and compared to an optimal benchmark solution. A game-theoretic analysis is made with respect to how an intelligent agent, that bids on behalf of a prosumer can try to strategize within the auction, in order to make itself better-off. Our simulations show that there is an alignment of incentives, i.e., when the prosumers try to strategize, they actually improve the auction's efficiency
Changes in the visual analyzer occurring as a result of space flight
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M.A. Valyakh1,2, N.G. Baeva1,2
1 City Clinical Hospital No. 15, Moscow, Russian Federation
2 Pirogov Russian National Research Medical University, Moscow, Russian Federation
Nowadays, objectives of space medicine are to study the impact of space factors (microgravity, hypogravity, space radiation) on the human body, as well as to develop recommendations for improving the performance of crew members during space expeditions.
Microgravity occurs while being at a great distance from celestial bodies when their gravitational influence is very small. And hypogravity, in turn, is a variant of reduced gravity.
Over the past few years, NASA officers have repeatedly recorded changes in the visual organ of astronauts after long space missions, in particular, they manifested an optic nerve swelling, a reduction in the anterior-posterior axial length of the eye, a change in blood flow velocity, and hypermetropia. European scientists obtained similar data. Also, velvet-like exudates were ophthalmoscopically revealed and visual field loss was recorded. National scientists have reported a varying severity of optic nerve swelling in astronauts after long space missions.
The article presents a structured review of the results of both foreign and national scientists as a result of astronaut survey during space missions and after their completion.
Key words: microgravity, hypogravity, space flight, intraocular pressure, optic nerve swelling, hypermetropia, intracranial pressure.
For citation: Valyakh M.A., Baeva N.G. Changes in the visual analyzer occurring as a result of space flight. Russian Journal of Clinical Ophthalmology. 2019;19(1):27–30.
About the authors:
1,2Maxim A. Valyakh — ophthalmologist, assistant of the Department of Ophthalmology;
1,2Nadezhda G. Baeva — ophthalmologist; graduate student.
1City Clinical Hospital No. 15. 23, Veshnyakovskaya str., Moscow, 111539, Russian Federation.
2Pirogov Russian National Research Medical University. 1, Ostrovityanova str., Moscow, 117997, Russian Federation.
Contact information: Maxim A. Valyakh, e-mail: [email protected]. Financial Disclosure: no author has a financial or property interest in any material or method mentioned. There is no conflict of interests. Received 14.11.2018.<br
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