Sheaves on fibered threefolds and quiver sheaves

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

Система оперативной оценки состояния потенциально опасных гидрообъектов

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.В статье рассматриваются результаты разработки системы мониторинга потенциально опасных гидрообъектов. Представлена формальная постановка задачи, модели сцены мониторинга и ее участников. Сцена изначально ориентирована на постепенную замену участников-людей на системы с искусственным интеллектом. Модели носят унифицированный характер и допускают уточнение до уровня программного кода. На основе моделей построен проактивный алгоритм мониторинга, обеспечивающий фиксацию опасных ситуаций на начальной стадии их возникновения и оперативный синтез соответствующих управляющих решений. Алгоритм использует базу знаний, содержащую формализованные экспертные знания об особенностях наблюдаемых объектов и ресурсах администрации региона для борьбы с катастрофическими явлениями.Для автоматизации решения разработан аппаратно-программный комплекс, использующий отечественные интеллектуальные датчики. Программы написаны в консольном варианте, требуют минимум вычислительных ресурсов. Особенность системы заключается в минимизации времени принятия решений и уменьшении их субъективизма за счет уменьшения роли человеческого фактора.Комплекс предназначен для применения в районах, где возможны паводки водных объектов с катастрофическими последствиями

ДОЛГОЖИВУЩИЕ РАДИОНУКЛИДЫ ПРИ ПОЛУЧЕНИИ [18F]ФТОРХОЛИНА ДЛЯ ПЭТ-ДИАГНОСТИКИ

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.Исследовано распределение долгоживущих радионуклидов между готовой лекарственной формой, регенерированной водой [18O]H2 O и картриджами сорбционной очистки в процессе производства [18F]фторхолина. Определен изотопный состав долгоживущих радионуклидов (t 1/2 = 10–312 сут), рассмотрены механизмы их образования и накопления на картриджах. Показано, что в произведенных партиях радиофармпрепарата содержание долгоживущих радионуклидов на 5 порядков ниже предельных значений, задаваемых соответствующей статьей 07/2016:2793 Европейской фармакопеи. Полученные результаты имеют важное значение для оптимизации методов обращения с радиоактивными отходами при производстве [ 18F]фторхолина с использованием циклотрона IBA Cyclone 18/9 HC и, как следствие, минимизации дозовых нагрузок персонала

Housing metadata for the common physicist using a relational database

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

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

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

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

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