Метод равновесно-арбитражной балансировки для расчета многосвязной мехатронной системы

The system of a drive of the radio telescope, consisting of three subsystems - mechanical, high-speed and systems of an item contour of management in the conditions of structural inconsistency and uncertainty is considered multicoherent. In calculation (STACK) is used algorithm of optimisation systems on the basis of the equilibrium-arbitration balancing, based on methods of optimisation of management multiobjective multicriterial systems (ММС) on the basis of is stable-effective game decisions and compromises.Рассматривается многосвязная мехатронная система привода радиотелескопа, состоящая из трех подсистем - механической, скоростной и системы позиционного контура управления в условиях структурной несогласованности и неопределенности. В расчете используется двухэтапный алгоритм оптимизации мехатронной системы на основе равновесно-арбитражной балансировки, базирующийся на методах оптимизации управления многообъектными многокритериальными системами (ММС) на основе стабильно-эффективных игровых решений и компромиссов (СТЭК)

Метод многокритериальной оптимизации мехатронной системы на основе равновесно-арбитражного компромисса

This article considers a multiply connected mechatronic system of the telescope drive that consists of three subsystems - mechanical, executive and computer in conditions of structural inconsistency and uncertainty. 2-step algorithm of multi criteria optimization based on equilibrium-arbitrary compromise is used to calculate parameters of this system. This algorithm is based on optimization control methods of multi object multi criteria systems and stable efficient decisions and compromises.В статье рассматривается многосвязная мехатронная система привода радиотелескопа, состоящая из трех подсистем - механической, исполнительной и компьютерной - в условиях структурной несогласованности и неопределенности. В расчете используется двухэтапный алгоритм многокритериальной оптимизации на основе равновесно-арбитражного компромисса, базирующийся на методах оптимизации управления многообъектными многокритериальными системами (ММС) на основе стабильно-эффективных решений и компромиссов (СТЭК)

Coherent dynamics and decoherence in a superconducting weak link

We demonstrate coherent dynamics of quantized magnetic fluxes in a superconducting loop with a weak link - a nanobridge patterned from the same thin NbN film as the loop. The bridge is a short rounded shape constriction, close to 10 nm long and 20 - 30 nm wide, having minimal width at its center. Quantum state control and coherent oscillations in the driven time evolution of the tunnel-junctionless system are achieved. Decoherence and energy relaxation in the system are studied using a combination of microwave spectroscopy and direct time-domain techniques. The effective flux noise behavior suggests inductance fluctuations as a possible cause of the decoherence.Comment: 5 pages, 3 figure

Many heads but one brain: FusionBrain – a single multimodal multitask architecture and a competition

Supporting the current trend in the AI community, we present the AI Journey 2021 Challenge called FusionBrain, the first competition which is targeted to make a universal architecture which could process different modalities (in this case, images, texts, and code) and solve multiple tasks for vision and language. The FusionBrain Challenge combines the following specific tasks: Code2code Translation, Handwritten Text recognition, Zero-shot Object Detection, and Visual Question Answering. We have created datasets for each task to test the participants’ submissions on it. Moreover, we have collected and made publicly available a new handwritten dataset in both English and Russian, which consists of 94,128 pairs of images and texts. We also propose a multimodal and multitask architecture – a baseline solution, in the centre of which is a frozen foundation model and which has been trained in Fusion mode along with Single-task mode. The proposed Fusion approach proves to be competitive and more energy-efficient compared to the task-specific one.We would like to thank Sber and SberCloud for granting the GPU-resources to us to experiment with different architectures and also to the participants to train their models, and for supporting the FusionBrain Challenge in general

The high energy cosmic ray particle spectra measurements with the PAMELA calorimeter

Abstract Up until now there has been limited, contradictive data on the high energy range of the cosmic ray electron-positron, proton and helium spectra. Due to the limitations of the use of a magnetic spectrometer, over 8 years experimental data was processed using information from a sampling electro-magnetic calorimeter, a neutron detector and scintillator detectors. The use of these devices allowed us to successfully obtain the high energy cosmic ray particle spectra measurements. The results of this study clarify previous findings and greaten our understanding of the origin of cosmic rays

Deuteron spectrum measurements under radiation belt with PAMELA instrument

Abstract In this work the results of data analysis of the deuteron albedo radiation obtained in the PAMELA experiment are presented. PAMELA is an international space experiment carried out on board of the satellite Resurs DK-1. The high precision detectors allow to register and identify cosmic ray particles in a wide energy range. The albedo deuteron spectrum in the energy range 70 – 600 MeV/nucleon has been measured

PAMELA Observation of the 2012 May 17 GLE Event

The PAMELA (Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) satellite-borne experiment has been collecting data in orbit since July 2006, providing accurate measurements of the energy spectra and composition of the cosmic radiation from a few hundred MeVn up to hundred GeVn. This wide interval of measured energies makes PAMELA a unique instrument for Solar Energetic Particle (SEP) observations. Not only does it span the energy range between the ground-based neutron monitor data and the observations of SEPs from space, but also PAMELA carries out the first direct measurements of the composition for the highest energy SEP events, including those causing Ground Level Enhancements (GLEs). PAMELA has registered many SEP events in solar cycle 24 including the 2012 May 17 GLE event (GLE 71), offering unique opportunities to address the question of high-energy SEP origin. Experimental performances and preliminary results on the 2012 May 17 events will be presented. We will discuss the derived particle injection time and compare with other time scales at the Sun including the flare and CME onset times

Parameter determination of observation station versus mining and geological conditions of subsoil use

In view of the commencement of new requirements on mining operational planning, the regulations have been set for the arrangement of observation stations for mining-induced ground surface deformation for all types of minerals. In this regard, parameter determination for survey stations at such objects of the physicochemical geotechnology as underground hydrocarbon storages is of the current concern. The regulatory and legal framework and the mining-and-geological conditions of subsoil use objects are reviewed with a special emphasis placed on the chief factors which have influence on arrangement of a deformation observation station. The observation station parameters are calculated with regard to mining-and geological conditions. As a result of the implemented research, the analytical expressions are for the first time ever obtained for determining the number of the control points of GNSS network and observation leveling network. It is found that in flat-lying beds, given no faulting, an observation station boundary can be defined by the averaged limit dip angle of the beds and by the depth of mining operations. The observation station boundaries can be delineated analytically, with regard to mining and geological conditions of a subsoil use object: area sizes of underground excavations, mining depth, averaged limit dip angle, thickness of enclosing and overlying rock masses. © 2021 Publishing house Mining book. All rights reserved

Features of diffusion mixing in Mo/Si multilayers

X-ray photoelectron spectroscopy, transmission electron microscopy, and and low-angle X-ray diffraction were used to investigate the diffusion intermixing in multilayer periodic Mo/Si coatings during manufacturing and heating at 340-380 ℃. It is shown that the mixed zones in the initial state consist of MoSi₂ silicide. Сharacter of mixed zones growth depends on the interface type (Si on Mo or Mo on Si). At initial stage of annealing, the activation energy of interdiffusion has been found to vary from 0.1 to 2.1 eV and from 0.7 to 2.1 eV for the 1-st and 2-nd interface type, respectively.3а допомогою рентгенiвської фотоелектронної спектроскопiї, просвiчувальної електронної мiкроскопiї та малокутової рентгенiвської дифрактометрiї дослiджено дифузiйне перемiшування у багатошарових перiодичних покриттях Mo/Si₂ при виготовленнi та нагрiваннi до 340-380 ℃. Показано, що у вихiдному станi перемiшанi зони складаються з силiциду молiбдену Mo/Si₂. Спостерiгається вiдмiннiсть у характерi росту перемiшаних зон у залежностi вiд типу меж подiлу (Si на Mo або Mo на Si). Встановлено, що енергiя активацiї дифузiї на початкових стадiях вiдпалу змiнюється вiд 0.1 до 2.1 еВ для межi першого типу та вiд 0.7 до 2.1 еВ - для другого типу.С помощью рентгеновской фотоэлектронной спектроскопии, просвечивающей электронной микроскопии и малоугловой рентгеновской дифрактометрии исследовалось диффузионное перемешивание в многослойных периодических покрытиях Mo/Si при изготовлении и при нагреве до 340-380 ℃. Показано, что в исходном состоянии перемешанные зоны состоят из силицида молибдена MoSi₂. Наблюдается различный характер роста перемешанных зон в зависимости от типа границы раздела (Si на Mo или Mo на Si). Установлено, что энергия активации диффузии на начальной стадии отжига изменяется от 0.1 до 2.1 эВ для границы первого типа и от 0.7 до 2.1 эВ - для второго типа