35 research outputs found

    Sheaves on fibered threefolds and quiver sheaves

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    This paper classifies a class of holomorphic D-branes, closely related to framed torsion-free sheaves, on threefolds fibered in resolved ADE surfaces over a general curve C, in terms of representations with relations of a twisted Kronheimer--Nakajima-type quiver in the category Coh(C) of coherent sheaves on C. For the local Calabi--Yau case C\cong\A^1 and special choice of framing, one recovers the N=1 ADE quiver studied by Cachazo--Katz--Vafa.Comment: 13 pages, 2 figures, minor change

    БистСма ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½ΠΎΠΉ ΠΎΡ†Π΅Π½ΠΊΠΈ состояния ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎ опасных Π³ΠΈΠ΄Ρ€ΠΎΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠ²

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    The article deals with the results of the development of monitoring system of potentially dangerous hydro-objects. The formal statement of the problem, models of the monitoring scene and its participants are presented. The scene is initially focused on the gradual replacement of participants-people on systems with artificial intelligence. The models are unified and can be refined to the level of program code. On the basis of models the proactive algorithm of monitoring providing fixing of dangerous situations at an initial stage of their emergence and operational synthesis of the corresponding managing decisions is constructed. The algorithm uses a knowledge base containing formalized expert knowledge about the features of the observed objects and resources of the regional administration to combat catastrophic phenomena.To automate the solution, a hardware and software system using domestic intelligent sensors has been developed. Programs are written in the console version, require a minimum of computing resources. The peculiarity of the system is to minimize the time of decision-making and reducing their subjectivity by reducing the role of the human factor.The complex is intended for use in areas where possible floods of water bodies with disastrous consequences.Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ систСмы ΠΌΠΎΠ½ΠΈΡ‚ΠΎΡ€ΠΈΠ½Π³Π° ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎ опасных Π³ΠΈΠ΄Ρ€ΠΎΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠ². ΠŸΡ€Π΅Π΄ΡΡ‚Π°Π²Π»Π΅Π½Π° Ρ„ΠΎΡ€ΠΌΠ°Π»ΡŒΠ½Π°Ρ постановка Π·Π°Π΄Π°Ρ‡ΠΈ, ΠΌΠΎΠ΄Π΅Π»ΠΈ сцСны ΠΌΠΎΠ½ΠΈΡ‚ΠΎΡ€ΠΈΠ½Π³Π° ΠΈ Π΅Π΅ участников. Π‘Ρ†Π΅Π½Π° ΠΈΠ·Π½Π°Ρ‡Π°Π»ΡŒΠ½ΠΎ ΠΎΡ€ΠΈΠ΅Π½Ρ‚ΠΈΡ€ΠΎΠ²Π°Π½Π° Π½Π° ΠΏΠΎΡΡ‚Π΅ΠΏΠ΅Π½Π½ΡƒΡŽ Π·Π°ΠΌΠ΅Π½Ρƒ участников-людСй Π½Π° систСмы с искусствСнным ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΠΎΠΌ. МодСли носят ΡƒΠ½ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΉ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ ΠΈ Π΄ΠΎΠΏΡƒΡΠΊΠ°ΡŽΡ‚ ΡƒΡ‚ΠΎΡ‡Π½Π΅Π½ΠΈΠ΅ Π΄ΠΎ уровня ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ³ΠΎ ΠΊΠΎΠ΄Π°. На основС ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ построСн ΠΏΡ€ΠΎΠ°ΠΊΡ‚ΠΈΠ²Π½Ρ‹ΠΉ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌ ΠΌΠΎΠ½ΠΈΡ‚ΠΎΡ€ΠΈΠ½Π³Π°, ΠΎΠ±Π΅ΡΠΏΠ΅Ρ‡ΠΈΠ²Π°ΡŽΡ‰ΠΈΠΉ Ρ„ΠΈΠΊΡΠ°Ρ†ΠΈΡŽ опасных ситуаций Π½Π° Π½Π°Ρ‡Π°Π»ΡŒΠ½ΠΎΠΉ стадии ΠΈΡ… возникновСния ΠΈ ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΉ синтСз ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ΡƒΠΏΡ€Π°Π²Π»ΡΡŽΡ‰ΠΈΡ… Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΉ. Алгоритм ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ Π±Π°Π·Ρƒ Π·Π½Π°Π½ΠΈΠΉ, ΡΠΎΠ΄Π΅Ρ€ΠΆΠ°Ρ‰ΡƒΡŽ Ρ„ΠΎΡ€ΠΌΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½Ρ‹Π΅ экспСртныС знания ΠΎΠ± особСнностях Π½Π°Π±Π»ΡŽΠ΄Π°Π΅ΠΌΡ‹Ρ… ΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠ² ΠΈ рСсурсах администрации Ρ€Π΅Π³ΠΈΠΎΠ½Π° для Π±ΠΎΡ€ΡŒΠ±Ρ‹ с катастрофичСскими явлСниями.Для Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ Π°ΠΏΠΏΠ°Ρ€Π°Ρ‚Π½ΠΎ-ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½Ρ‹ΠΉ комплСкс, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‰ΠΈΠΉ отСчСствСнныС ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Ρ‹Π΅ Π΄Π°Ρ‚Ρ‡ΠΈΠΊΠΈ. ΠŸΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΡ‹ написаны Π² консольном Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π΅, Ρ‚Ρ€Π΅Π±ΡƒΡŽΡ‚ ΠΌΠΈΠ½ΠΈΠΌΡƒΠΌ Π²Ρ‹Ρ‡ΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… рСсурсов. ΠžΡΠΎΠ±Π΅Π½Π½ΠΎΡΡ‚ΡŒ систСмы Π·Π°ΠΊΠ»ΡŽΡ‡Π°Π΅Ρ‚ΡΡ Π² ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ принятия Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΉ ΠΈ ΡƒΠΌΠ΅Π½ΡŒΡˆΠ΅Π½ΠΈΠΈ ΠΈΡ… ΡΡƒΠ±ΡŠΠ΅ΠΊΡ‚ΠΈΠ²ΠΈΠ·ΠΌΠ° Π·Π° счСт ΡƒΠΌΠ΅Π½ΡŒΡˆΠ΅Π½ΠΈΡ Ρ€ΠΎΠ»ΠΈ чСловСчСского Ρ„Π°ΠΊΡ‚ΠΎΡ€Π°.КомплСкс ΠΏΡ€Π΅Π΄Π½Π°Π·Π½Π°Ρ‡Π΅Π½ для примСнСния Π² Ρ€Π°ΠΉΠΎΠ½Π°Ρ…, Π³Π΄Π΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Ρ‹ ΠΏΠ°Π²ΠΎΠ΄ΠΊΠΈ Π²ΠΎΠ΄Π½Ρ‹Ρ… ΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠ² с катастрофичСскими послСдствиями

    Π”ΠžΠ›Π“ΠžΠ–Π˜Π’Π£Π©Π˜Π• Π ΠΠ”Π˜ΠžΠΠ£ΠšΠ›Π˜Π”Π« ПРИ ΠŸΠžΠ›Π£Π§Π•ΠΠ˜Π˜ [18F]ЀВОРΠ₯ΠžΠ›Π˜ΠΠ Π”Π›Π― ПЭВ-Π”Π˜ΠΠ“ΠΠžΠ‘Π’Π˜ΠšΠ˜

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    In the present study the distribution of long-lived radionuclides between the drug product, recovered water [ 18O]H2 O and solid phase extraction cartridges was studied in [18F]fluorocholine production process. Isotopic composition for long-lived nuclides (half-lives = 10–312 days) was determined, the mechanisms of their formation and accumulation on cartridges are considered. It was shown that in the batches of pharmaceutical produced the content of long-lived nuclides is by 5 orders of magnitude lower than the limit value specified by the appropriate 07/2016:2793 European Pharmacopoeia article. The results obtained are of vital importance for optimization of the procedures for radioactive waste management in the production of [18F]fluorocholine using IBA Cyclone 18/9 HC cyclotron and, consequently, for minimization of radiation exposure of personnel.ИсслСдовано распрСдСлСниС Π΄ΠΎΠ»Π³ΠΎΠΆΠΈΠ²ΡƒΡ‰ΠΈΡ… Ρ€Π°Π΄ΠΈΠΎΠ½ΡƒΠΊΠ»ΠΈΠ΄ΠΎΠ² ΠΌΠ΅ΠΆΠ΄Ρƒ Π³ΠΎΡ‚ΠΎΠ²ΠΎΠΉ лСкарствСнной Ρ„ΠΎΡ€ΠΌΠΎΠΉ, Ρ€Π΅Π³Π΅Π½Π΅Ρ€ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ Π²ΠΎΠ΄ΠΎΠΉ [18O]H2 O ΠΈ ΠΊΠ°Ρ€Ρ‚Ρ€ΠΈΠ΄ΠΆΠ°ΠΌΠΈ сорбционной очистки Π² процСссС производства [18F]Ρ„Ρ‚ΠΎΡ€Ρ…ΠΎΠ»ΠΈΠ½Π°. ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ ΠΈΠ·ΠΎΡ‚ΠΎΠΏΠ½Ρ‹ΠΉ состав Π΄ΠΎΠ»Π³ΠΎΠΆΠΈΠ²ΡƒΡ‰ΠΈΡ… Ρ€Π°Π΄ΠΈΠΎΠ½ΡƒΠΊΠ»ΠΈΠ΄ΠΎΠ² (t 1/2 = 10–312 сут), рассмотрСны ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΡ‹ ΠΈΡ… образования ΠΈ накоплСния Π½Π° ΠΊΠ°Ρ€Ρ‚Ρ€ΠΈΠ΄ΠΆΠ°Ρ…. Показано, Ρ‡Ρ‚ΠΎ Π² ΠΏΡ€ΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½Π½Ρ‹Ρ… партиях Ρ€Π°Π΄ΠΈΠΎΡ„Π°Ρ€ΠΌΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π° содСрТаниС Π΄ΠΎΠ»Π³ΠΎΠΆΠΈΠ²ΡƒΡ‰ΠΈΡ… Ρ€Π°Π΄ΠΈΠΎΠ½ΡƒΠΊΠ»ΠΈΠ΄ΠΎΠ² Π½Π° 5 порядков Π½ΠΈΠΆΠ΅ ΠΏΡ€Π΅Π΄Π΅Π»ΡŒΠ½Ρ‹Ρ… Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΉ, Π·Π°Π΄Π°Π²Π°Π΅ΠΌΡ‹Ρ… ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅ΠΉ ΡΡ‚Π°Ρ‚ΡŒΠ΅ΠΉ 07/2016:2793 ЕвропСйской Ρ„Π°Ρ€ΠΌΠ°ΠΊΠΎΠΏΠ΅ΠΈ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΠΈΠΌΠ΅ΡŽΡ‚ Π²Π°ΠΆΠ½ΠΎΠ΅ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ для ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² обращСния с Ρ€Π°Π΄ΠΈΠΎΠ°ΠΊΡ‚ΠΈΠ²Π½Ρ‹ΠΌΠΈ ΠΎΡ‚Ρ…ΠΎΠ΄Π°ΠΌΠΈ ΠΏΡ€ΠΈ производствС [ 18F]Ρ„Ρ‚ΠΎΡ€Ρ…ΠΎΠ»ΠΈΠ½Π° с использованиСм Ρ†ΠΈΠΊΠ»ΠΎΡ‚Ρ€ΠΎΠ½Π° IBA Cyclone 18/9 HC ΠΈ, ΠΊΠ°ΠΊ слСдствиС, ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ Π΄ΠΎΠ·ΠΎΠ²Ρ‹Ρ… Π½Π°Π³Ρ€ΡƒΠ·ΠΎΠΊ пСрсонала

    Housing metadata for the common physicist using a relational database

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    SAM was developed as a data handling system for Run II at Fermilab. SAM is a collection of services, each described by metadata. The metadata are modeled on a relational database, and implemented in ORACLE. SAM, originally deployed in production for the D0 Run II experiment, has now been also deployed at CDF and is being commissioned at MINOS. This illustrates that the metadata decomposition of its services has a broader applicability than just one experiment. A joint working group on metadata with representatives from ATLAS, BaBar, CDF, CMS, D0, and LHCB in cooperation with EGEE has examined this metadata decomposition in the light of general HEP user requirements. Greater understanding of the required services of a performant data handling system has emerged from Run II experience. This experience is being merged with the understanding being developed in the course of LHC experience with data challenges and user case discussions. We describe the SAM schema and the commonalities of function and service support between this schema and proposals for the LHC experiments. We describe the support structure required for SAM schema updates, the use of development, integration, and production instances. We are also looking at the LHC proposals for the evolution of schema using keyword-value pairs that are then transformed into a normalized, performant database schema

    Hydrology objects monitoring system

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    The article deals with the results of the development of monitoring system of potentially dangerous hydro-objects. The formal statement of the problem, models of the monitoring scene and its participants are presented. The scene is initially focused on the gradual replacement of participants-people on systems with artificial intelligence. The models are unified and can be refined to the level of program code. On the basis of models the proactive algorithm of monitoring providing fixing of dangerous situations at an initial stage of their emergence and operational synthesis of the corresponding managing decisions is constructed. The algorithm uses a knowledge base containing formalized expert knowledge about the features of the observed objects and resources of the regional administration to combat catastrophic phenomena.To automate the solution, a hardware and software system using domestic intelligent sensors has been developed. Programs are written in the console version, require a minimum of computing resources. The peculiarity of the system is to minimize the time of decision-making and reducing their subjectivity by reducing the role of the human factor.The complex is intended for use in areas where possible floods of water bodies with disastrous consequences

    PRODUCTION OF ZINC ANODES AT THE PILOT-SCALE PRODUCTION ITM NAN OF BELARUS

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    The production of precision-sized zinc anodes for metallurgy and machine-building under the technology, developed by ITM NAN of Belarus is described

    Biodiversity of the Regional Landscape Park Samara Plavni within the first large reservoir in Europe Biodiversity of the Regional Landscape Park Samara Plavni within the first large reservoir in Europe

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    The creation of reservoirs in river valleys for the accumulation of fresh water has been and remains an important issue around the world. This process has both positive and negative consequences for people and nature. Significant changes in the regime of rivers and their valleys, flooding of meadows and forests, flooding of soils and changes in the composition of flora and fauna of adjacent territories are taking place. In this article, we consider the restoration of the biodiversity of a site of disturbed lands after the creation of one of the first large reservoirs in Europe – the Dnieper (Zaporozhe) on the River Dnieper, which has existed since 1933. The territory of the Samara floodplains was formed on the floodplain of the mouth of the Samara River, as a result of which the territories of various forest, meadow and bog biotopes were flooded. For almost 90 years, new biotopes have been developing, and populations of plant and animal species, especially waterfowl, have been renewed and enriched. In the conditions of climate change and anthropogenic pressure, the existence of this territory has fallen into question. To control the conservation of biodiversity, it is necessary to apply various management methods, one of which is creation of nature reserves. The article presents the results of a complex of scientific studies that were carried out during the zoning of the regional park Samara Plavni to improve the management of the protection of water areas and river banks. We have investigated: hydrological features, species diversity of the flora and coenotic diversity of the vegetation, fauna of aquatic invertebrates, and terrestrial vertebrates. Zoning of the Regional Landscape Park was based on the composition of stable components of ecosystems. When applying the protected regime in different zones, conditions will be created for the preservation of habitats of species, including those protected in Europe: higher plants (Senecio borysthenicus (DC.) Andrz. ex Czern., Tragopogon borystenicus Artemcz.), reptiles (Emys orbicularis (Linnaeus, 1758), Vipera renardi (Christoph, 1861)), birds (Aythya ferina (Linnaeus, 1758), Vanellus vanellus (Linnaeus, 1758), Haematopus ostralegus Linnaeus, 1758, Numenius arquata (Linnaeus, 1758), Alcedo atthis (Linnaeus, 1758), Lanius excubitor (Linnaeus, 1758)), mammals (Lutra lutra (Linnaeus, 1758)). Such changes would increase the implementation of the reproductive potential of all species without exception in the studied ecosystems

    Average Number of Sunspots Multiple Interacting Programs June 22

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    We describe some of the key aspects of the SAMGrid system, used by the D0 and CDF experiments at Fermilab. Having sustained success of the data handling part of SAMGrid, we have developed new services for job and information services. Our job management is rooted in Condor-G and uses enhancements that are general applicability for HEP grids. Our information system is based on a uniform framework for configuration management based on XML data representation and processing. 1
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