A distributed data warehouse system is one of the actual issues in the field of astroparticle physics. Famous experiments, such as TAIGA, KASCADE-Grande, produce tens of terabytes of data measured by their instruments...
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In the frame of the Karlsruhe-Russian Astroparticle Data Life Cycle Initiative it was proposed to deploy an educational resource *** for the training of students in the field of astroparticle physics. This resource is...
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The paper describes the main principles of visualization software development, as well as implemented by this software approach, which is based on the use of ontologies to describe both the rendered domain, and the ru...
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The paper describes the main principles of visualization software development, as well as implemented by this software approach, which is based on the use of ontologies to describe both the rendered domain, and the rules of its 3Ddisplaying. This approach allows the user to avoid programming the 3Dscene and describe it in terms of the research area. The paper set out a formal model of a software tool, its architecture, basic modules and ontology structure. The process of visual scene design and creation is described, including the steps of ontology modelling, visual objects creation, formation of scene describing rules, code generation, visualization, organization of data exchange between visualization software and data source. WebGLbased library was chosen as primary means for 3D graphics rendering, which allows to create visual scenes in the user's web browser. Examples of generated scenes and the question of its performance are also discussed in the article.
We complete our derivation of upper limits on the CP violating ηππ and η0ππ couplings from an analysis of their two-loop contributions to the neutron electric dipole moment (nEDM). We use a phenomenological Lagr...
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We develop a modified hybrid sequential Lagrangean heuristic for the p-median problem and its shared memory parallel implementation using the OpenMP interface. The algorithm is based on finding the sequences of lower ...
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The problem of packing of equal circles in the convex bounded 2-D sets is considered. The metric is significantly different from the Euclidean one. Here the distance between points is equal to the minimal time that re...
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In this study, we describe a volunteer computing BOINC-based project aimed at solving computationally hard inverse problems in underwater acoustics. We used this project to solve two instances of single-hydrophone dis...
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The paper studies a variant of Granovetter’s threshold model of conforming behavior. In this model, a network of agents with binary states (inactive/active) acts in discrete time under the influence of instigators (a...
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The paper studies a variant of Granovetter’s threshold model of conforming behavior. In this model, a network of agents with binary states (inactive/active) acts in discrete time under the influence of instigators (always active agents). Using special computational method based on algorithms for solving Boolean satisfiability problem, we can find dispositions of small number of instigators among initially inactive agents, which after several time moments force the majority of agents to the active state. Using a large number of networks, both randomly generated, and fragments of real world social networks, we search for the interconnection between static and dynamic characteristics of network vertices: whether or not static centrality measures influence the chances of the vertex to be picked as an instigator.
An optimal control problem for the continuity equation is considered. The aim of a controller is to maximize the total mass within a target set at a given time moment. An iterative numerical algorithm for solving this...
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