bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aspirational Histories of Third World Cosmopolitanism: Dialectical Interactions in Afro-Chinese Beijing
Authors: Ke-Schutte Jay 
Published: November 2019

AbstractThis article follows four years of ethnographic research in Beijing and investigates tropes of “third world solidarity” (termed disanshijie datuanjie 第三世界大团结) and “cosmopolitanism” as they are pragmatically recruited or intersubjectively evoked in urban Afro-Chinese interactions. In it, I demonstrate how historical tensions between cosmopolitanism and “third worldism” are mediated through the translation of the intersubjective cultural concepts guanxi (关系) and Ubuntu. I ask: How do semiotic horizons of “history” and “culture” become pragmatically indispensable activities through which contemporary Chinese and African subjects establish historical or culturally intelligible grounds for a “novel” interaction under current conditions of South-South educational migrancy? Drawing on a genealogy of pragmatist semiotics and symbolic interactionism (Goffman 1983; Agha 2007; Carr 2011), read through a critical theoretical lens (Fanon 1965; Lukács 2010), I reveal a dialectics of interaction at play in the mediation of historical and cultural dynamics in Afro-Chinese encounters in Beijing. In doing so, this article explores a tension that emerges at the juxtaposition of third world solidarity and cosmopolitan aspiration, one—as I will show—that certainly informs what will come to be among the most pivotal interactions of the twenty-first century: that between China and Africa.
Tell Me That I Am Not a Ciganin, Damn Your Mother! The Social and Political Consequences of Enregisterment in Bulgaria
Authors: Canut Cécile 
Published: November 2019

AbstractIn Bulgaria, the Rom/Ciganin persona is defined by non-Ciganin Bulgarians as a set of reiterated features, displayed as fixed and supposedly identifiable by all. This persona is enregistered through various semiotic processes, television being one of the most important ones. Rom/Ciganin is the name that links together a set of indexical stereotypes (naturalized as essences) and purports to denote a particular referent, a community, an ethnicity, and the individuals who, by being so labeled, are said to belong to it. Through the study of a racist act of aggression filmed in Bulgaria, I hypothesize that the hatred of Cigani passes discursively through a typification constantly reelaborated by a process of enregisterment. The making of peoples, groups, and communities is not new, but it becomes problematic when researchers, and the institution in general, relay the idea of fixed ethnic categories without problematizing them. They thus legitimize the Roma (or Cigani, Gypsies, etc.) category, and indeed the Rom persona, through the (re)production of a set of political discourses based on ethnicity and discrimination. This legitimizes a category that allows the marginalization and exclusion of individuals and families in the name of their supposed membership.
Humanity and Its Beneficiaries: Footing and Stance-Taking in an International Criminal Trial
Authors: D’hondt Sigurd 
Published: November 2019

AbstractThis article elucidates the role of metapragmatic devices like footing and stance-taking in trial hearings before the International Criminal Court (ICC) in The Hague. It focuses on the case of Ahmad al Faqi al Mahdi, a Malian Islamist found guilty of the 2012 destruction of cultural heritage in Timbuktu. We examine how the prosecution and defense reflexively formulate the hearing as part of a wider text trajectory and how they align personae across participation frameworks by locating the current courtroom event into a wider dialogical field. A careful inspection of these metapragmatic devices reveals how trial participants navigate the multiple tensions facing this emergent, amalgamated form of criminal adjudication, which lacks a coercive apparatus of its own and still bears the traces of the political act of its institution.
Mathematical modeling of molecular-genetic systems regulatory mechanisms activity in malignant neoplasms
Authors: Saidalieva M , Gildieva M S , Abduvaliev A A , Hidirova M B 
Published: November 2019

Abstract
The paper presents the method for constructing systems of nonlinear functional-differential equations with delay of a cellular regulator in norm and in cancerous formations. The existence of stable stationary as well as self-oscillatory solutions to the regulator equations, chaotic solutions and the “black hole” effect is established. The results of the quantitative analysis of the developed equations show the possibility of existence of chaotic behavior (the emergence of various types of chromosomal aberrations), the effect of failure of solutions on the trivial attractor - the effect of “black hole” (metastasis). The opportunity for forecasting the basic modes characteristics allows establishing molecular-genetic bases in oncologic pathogenesis, carrying out diagnostics and predicting characteristic stages of malignant neoplasms current.
Mathematical model of liquid sulfur dioxide injection into layer saturated with water and methane
Authors: Khasanov M K 
Published: November 2019

Abstract
The mathematical model of sulfur dioxide solution injection into the layer saturated with the water and methane accompanied by formation of sulfur gas hydrate is presented. For the axisymmetric problem, self-similar solutions describing the distribution of temperature and pressure in the layer are constructed. It is established that depending on the mass flow rate of sulfur dioxide injection, the formation of sulfur dioxide gas hydrate can occur both on the front surface and in the extended region. There are determined the limit values of the mass flow rate of sulfur dioxide injection separating different modes of sulfur dioxide gas hydrate formation. It is established that the mode with the gas hydrate formation of sulfur dioxide in an extended region is realized at high values of mass injection flow rate of sulfur dioxide and of the initial temperature of the layer.
Mathematical models to determine the influence of road parameters and conditions on vehicular speed
Authors: Kozlov V G , Skrypnikov A V , Samcov V V , Levushkin D M , Nikitin A A , Zaikin A N 
Published: November 2019

Abstract
The study of vehicular movement modes in adverse weather conditions allowed defining the dependence of traffic modes at certain road segments on weather conditions. It is found that the average vehicle speed changes within a year over a wide range depending on road conditions even on its straight horizontal sections. There is a considerable difference in the maximum speed of traffic movement. Complex road sections significantly influence the traffic mode during any period of the year, especially in adverse weather conditions. The road surface condition exerts the greatest impact on the traffic speed. If the adhesion coefficient equals 0.2-0.3 the average traffic speed is 20-25% lower than if that adhesion coefficient equals 0.5-0.6, and in ice conditions the average traffic speed decreases by 40-50%. The proposed calculation formula allows defining the influence of weather conditions on the traffic mode of free-moving cars or cars in a joint traffic flow. It provides for the feasibility study regarding measures aimed to increase the traffic speed in adverse weather conditions of the year. Based on the observations and calculations the correlation dependences of average and maximum traffic speeds on the adhesion coefficient within a 7.0 m-wide road without the hard shoulder were obtained.
About new forecasting methodology for digital control processes
Authors: Rakov V I , Zakharova O V , Esin K S 
Published: November 2019

Abstract
The article substantiates the need for prompt adjustment of the dynamics of the controlled parameter in the management process and the development of a methodology for prompt adjustment in the proportional-integral-differential (PID) control cycle (in real time). New methods of mixed and optimal digital control on the basis of appropriate mathematical models of digital PID control are proposed, which are distinguished by the formation of the best control action in the tact of preventive evaluation of the control object response.
Control of accuracy of turning treatment of parts of machines based on fuzzy logic algorithms
Authors: Shashok A V , Kutyshkin A V 
Published: November 2019

Abstract
The paper considers the possibility of using fuzzy logic algorithms in the development of automatic control systems for precision machining of cylindrical surfaces. For the theoretical justification of the use of these algorithms, a mathematical model of the turning process and a mathematical model of the fuzzy-controller were developed. When developing the fuzzy-controller mathematical model, its input and output linguistic variables were determined, their fuzzification was carried out. The base of fuzzy linguistic rules that formed the algorithm for controlling the processing accuracy was developed. The defuzzification method was chosen, which allows determining the value of the control value depending on the value of the mismatch of the controlled value. The value of the error of the dynamic adjustment of the processing process was considered as an input linguistic variable fuzzy-regulator was considered, and the value of the correction made to the value of the longitudinal feed - as its output linguistic variable. The results of the comparative theoretical analysis of the processing accuracy in the process system without control were studied along with the control of the classic proportional regulator and proportional fuzzy-controller using the fuzzy inference algorithm Mamdani. Based on the results of the comparative analysis, it is concluded that the use of fuzzy logic algorithms is promising in the development of automatic control systems for precision turning of machine parts.
Simulation of an adjustable synchronous electric motor drive of a pumping unit in a reservoir pressure maintenance system
Authors: Korzhev A A , Bolshunova O M , Voytyuk I N 
Published: November 2019

Abstract
The paper describes the method of controlling water supply while maintaining reservoir pressure via changing the speed of rotation of a pumping unit synchronous electric motor drive. The paper presents a review of existing frequency converters, specifying their advantages and disadvantages. The selection of a cascade semiconductor frequency converter is substantiated. A detailed description of the computer model of an adjustable drive system based on a high-voltage synchronous electric motor drive and the selected frequency converter is also presented. The results of modeling in the form of graphs of transients allow us to conclude about the adequacy of the model and the possibility of its practical use in the study of transient modes of controlled electric pumping units based on synchronous motors.
Improvement of efficiency of monitoring and diagnosing electromechanical systems by automating recognition parameters
Authors: Menshikov I A , Kargin V A , Volgin A V , Moiseev A P 
Published: November 2019

Abstract
Evaluation of operating modes of electromechanical systems on vehicles with traction DC motors based on a combination of values of several signs of recognition of the technical condition will increase the probability of detecting failures of traction motors by minimizing the influence of factors that are irregular. The results of the evaluation of the modes of operation and the technical condition of electromechanical systems with traction DC motors of an AC electric train of the ER-9 T series are presented. The problem of recognizing the modes of operation and the technical state of electromechanical systems has been solved with the help of mathematical processing of the parameters of recognition features used in an automated system for adaptive monitoring and prediction of failures of elements of electromechanical systems.
Teeth interference in harmonic drives intended for heavy engineering
Authors: Strelnikov V. N. , Sukov M. G. 
Published: November 2019

Abstract
Based on geometric studies and force analysis of a heavy harmonic gearing and through application of the elasticity theory methods, motions of the deformed gearing from the theoretically preset positioning have been ascertained. A fundamental design feature of the heavy harmonic drive consists in a disk wave generator which permits to provide additional deformations of the flexible gear due to incomplete contact between the disks and the flexible wheel. The scale factor along with the small tooth module between 1.5 and 2 mm of the wave-type reducers and heavy loads imposed on the flexible gear increase its deformations and intensify formation of interference between the teeth. The above circumstances drastically reduce load-carrying capacities of the harmonic drives and actually restrict them due to the carrying capacity of a flexible bearing. The results obtained provide both qualitative and quantitative characteristics of the teeth interference depending on the wave generator swivel angle φ at various values of the transmitted torque between 0 and 5·105
kNm.
ECG cloud monitoring and analysis information system
Authors: Emelyanenko V M , Kurganov K I , Potekhin D I 
Published: November 2019

Abstract
The article shows the possibility of implementing a technical solution for a dynamic cloud-based ECG monitoring system. It can conduct continuous remote monitoring of the dynamics of the human circulatory system state, aiming at quick detecting diseases of the circulatory system and its adjacent diseases. The system can perform 24/7 measurement of the health state of the circulatory system using a mobile cardiograph that sends received ECG data to the server where analysis and processing are performed. It can be used as patients who do not have the opportunity to visit a specialist in person, as well as in hospitals. The system is recommended for use in sports facilities for monitoring the health of athletes and life-threatening events.
Studying the natural gas market under demand uncertainty using a heterogeneous distributed computing environment
Authors: Zorkalzev V I , Edelev A V , Perzhabinsky S M , Sidorov I A , Feoktistov A G 
Published: November 2019

Abstract
In the paper, we propose a new model of the natural gas market simulation. It takes into account the random nature of the natural gas demand that depends, for example, on temperature fluctuations during the heating period. The natural gas supplier strategy is optimized with the reservation of the necessary amount of fuel to compensate for demand fluctuations. To implement simulation modeling, we developed a scalable application with the DISCOMP framework. We apply DISCOMP to develop and use scalable applications in a heterogeneous distributed computing environment. The application significantly increases the number of model runs and improves the simulation accuracy in comparison with the Mathcad computations on a personal computer.
Realization of project procedures in the item designing companies of the Industry 3.0 and Industry 4.0
Authors: Zakoldaev D A , Shukalov A V , Zharinov I O , Zharinov O O 
Published: November 2019

Abstract
The actual task under consideration is to organize the project activity in an item designing company of the Industry 4.0. A comparative analysis is given to realize project procedures in the companies of the Industry 3.0 and Industry 4.0. It is clear that the primary means to create technical documentation for an item designing component in the Industry 3.0 company is the so called CAD systems which help the designer to create construction, program and technological documentation according to the given samples. The Industry 4.0 companies require the cloud technologies to function, Industrial Internet of Things, the technology of imitating modelling and others, which help to organize project procedures in the company virtual space. Virtual tests help to reduce the costs of development of an item and to reduce the amount of time spent for creating the item technical documentation by reducing the expenses. The main result of modelling in the Industry 4.0 company is the item 3D-model which exactly is the digital twin of an item designing component. There is a scheme how to organize project activity in the Industry 4.0 company to generate the project solutions space and choose the best one (optimal) of project alternatives. The optimal criterion includes technical specifications to describe external influencing factors which influence the item during exploitation and which is a part of the technical task to develop the item.
High performance collisional PIC plasma simulation with modern GPUs
Authors: Romanenko Alexey A , Snytnikov Alexey V , Lazareva Galina G 
Published: November 2019

Abstract
GPU implementation of the collisional Particle-In-Cell plasma model is proposed. The goal of this model is the simulation of Plasma Enhanced Chemical Vapour Deposition (PECVD) reactors with glow discharge plasma and also for simulation of fusion plasma with sufficient role of collisions. Vlasov equation is being solved by the Particle-In-Cell (PIC) method. Collision are simulated with the null collision technique. The important difference from the collisionless approach is that major time is taken by collision evaluation and not by particle push.
GPU performance is increased by storing the particles in cells and also by the exclusion of synchronization of threads at the stage of current and density evaluation. Electromagnetic field is given by either the Maxwell equations or be the Poisson equation for electrostatic case. The Maxwell equations are solved by the FDTD method. The Poisson equation is solved by the hybrid method. Performance obtained at the moment is 0.5 TFLOPS for particle push with the Nvidia Tesla V100, and the parallels efficiency is 92% for a cluster with 250 nodes with 2 GPUs each resulting in 500 GPUs.
Computer simulation of diamagnetic regime in open magnetic trap
Authors: Dudnikova G I , Chernykh I G , Chernoshtanov I S , Vshivkov V A 
Published: November 2019

Abstract
Preliminary results of numerical simulation of transition to regime of diamagnetic confinement in an axially-symmetric mirror trap are presented. Author’s two-dimensional modification of hybrid Particle-in-Cell model is used in the simulations. Formation of region with hot dense plasma and very small magnetic field is demonstrated. Evolution of plasma and magnetic field, as well as structure of the formed region are discussed and compared with simple analytical estimations.
Hydrodynamical Simulation of Astrophysical Flows: High-Performance GPU Implementation
Authors: Akimova Elena , Misilov Vladimir , Kulikov Igor , Chernykh Igor 
Published: November 2019

Abstract
We present a new hydrodynamical code GPUPEGAS 2.0 for 3D simulation of astrophysical flows using the GPUs. This code is an extension of GPUPEGAS code developed in 2014 for simulation of interacting galaxies. GPUPEGAS 2.0 is based on the Authors’ numerical method of high order of accuracy for smooth solutions with small dissipation of the solution in discontinuities. The high order of accuracy and small dissipation are achieved by using the piecewise-linear representation of the physical variables in each dimension. The Rusanov flux allows one to simply vectorize the solution of the Riemann problem. The code was implemented for the cluster supercomputers NKS-30T (Siberian Supercomputer Center, SB RAS) and Uran (Institute of Mathematics and Mechanics, UrB RAS) using the hybrid MPI+CUDA technology. To avoid the compute capability-specific implementations of reduction routines, the Thrust library was used. The optimal parameters for kernel function were found for the three-dimensional computation grid. The Sedov point blast problem was used as a main test one. The numerical experiment was performed to simulate the hydrodynamics of the type II supernova explosion for the grid size of 2563. A set of experiments was performed to study performance and scalability of the developed code. The performance of 25 GFLOPS was achieved using a single Tesla M2090 GPU. The speedup of 3 times was achieved using a node with 4 GPUs. By using 16 GPUs, 70% scalability was achieved.
Hybrid numerical model of the plasma flow dynamics in open magnetic systems
Authors: Vshivkov V.A. , Boronina M.A. , Genrikh E.A. , Dudnikova G.I. , Vshivkova L.V. , Sudakov A.M. 
Published: November 2019

Abstract
The report provides a brief overview of the numerical models used to solve plasma physics problems. The necessity of using hybrid models is shown, and a hybrid model that can be used in computer modeling of plasma flows in open magnetic systems is considered in more detail. The features of using hybrid models in two-dimensional cylindrical coordinates are given. To solve the equations of particle motion, the Boris algorithm is considered and its improvement is proposed based on the analytical solution of equations at a time step. We present a number of results of numerical simulation of the interaction of plasma flows obtained on the basis of a hybrid model. The calculations were performed in relation to the conditions of laboratory experiments with laser plasma at the KI-1 facility of the ILF SB RAS and the conditions of the diamagnetic regime at the CAT facility of the INP SB RAS.
Development of simulation model of HPC system for Super Charm-Tau factory
Authors: Weins D , Vorobyev V , Chernykh I , Logashenko I 
Published: November 2019

Abstract
The article describes the design of a digital model of an HPC system for processing data from the Super Charm-Tau factory electron-positron collider of the “megascience” class. This model is developed using the AGNES multiagent modeling platform. The model includes intelligent agents that mimic the behavior of the main subsystems of the supercomputer, such as a task scheduler, computing clusters, data storage system, etc. This model allows calculating the parameters of the computing system necessary for processing and storing the results of operation of the Super Charm-Tau factory after its commissioning.
Deep neural networks as surrogate models for urban energy simulations
Authors: Vazquez-Canteli Jose , Dilsiz Demir Aysegul , Brown Julien , Nagy Zoltan 
Published: November 2019

Abstract
Building energy simulation helps governments implement effective policies to increase energy efficiency. In this work, we use deep neural networks (DNN) to create a surrogate model of an urban energy simulator. We modelled 7,860 buildings, with 2,620 geometries, and simulated them across all the climatic regions of the US. With these 68 million hourly data points, we trained two DNNs to predict the solar gains and thermal losses. The DNNs reduce computational time by a factor of 2500 while maintaining good accuracy (R2=0.85). Possible applications are prediction of energy demand due to climate change and building refurbishment measures.