Investigation of forced convective heat transfer of nanofluids in a cylindrical tube
Page:313-321
Headings of the journal
"Educational Resources and Technologies"
Educational environmentMethods and technologies of training and educationInformation technologyMathematical cyberneticsMethodological researchManagement in social and economic systemsApplied GeoinformaticsEducation for sustainable developmentAll rubrics
All rubrics
Release: 2014-1 (4)
Keywords: heat exchange in liquids, nanoliquid, Grets's task, the self-conjugate operator, own functions, the numerical modeling, the compelled convection
Annotation: In this paper, the heat transfer in liquids and nanofluids in a cylindrical tube is investigated. The exact solution for the temperature of one-component fluid (water) is obtained. Numerical simulation of forced convection of water and water/ nanofluid is performed and the temperature distribution in the tube is found. As a re: sult, the efficiency of heat transfer in water/ nanofluid is investigated depending on nanoparticle concentration and flow ve-locity.
Algebraic methods to model reasoning
Page:321-331
Release: 2014-1 (4)
Keywords: n-tuple algebra, logical inference, defeasible reasoning, collisions
Annotation: Boolean algebra is a widely known algebraic method in logic. This algebra is a counterpart of the propositional calculus. To model the predicate calculus, Lindenbaum-Tarski algebra, polyadic Halmos algebra and other algebras were proposed. However, these algebras are too abstract and complicated for algorithmization. In the given paper, we describe our n-tuple algebra that can be thought of as a generalization of mathematical theory of relations.
About influence of scale on result of complex decisions in methodology AHP by T. Saaty
Page:331-337
Release: 2014-1 (4)
Keywords: complex decisions, AHP, Analytic Hierarchy Process, scale, ordinal scale, ranking, Saaty
Annotation: Thi sarticle demonstrates theinfluence of scale on results of complex decisions in methodology Analytic Hierarchy Process (AHP) by Tomas L. Saaty. Investigate questions of transitions to different scales for solving direct and inverse Saaty problems. The results of transitions are demonstrated for solving problem of verify classification.
Estimation of the state of control objects and emergency sources based on analytical indicators
Page:338-346
Release: 2014-1 (4)
Keywords: emergency, comprehensive safeness, risk estimation, analytical indicators, OLAP
Annotation: This paper presents an approach of estimation of the control objects and emergency sources based on the integration of OLAP and Expert systems technologies. OLAP-models for multi-dimensional analysis of monitoring data and dynamic analysis of principal parameters of control objects are presented. The criteria of emergency risk estimation using expert knowledge about critical levels of danger are suggested. The implementation of proposed solutions in automated systems that provide a comprehensive safeness of Krasnoyarsk region.
Elements of information support system for tsunami modelling and tsunami hazard assessment on parallel computing systems
Page:346-360
Release: 2014-1 (4)
Keywords: tsunami inundation, tsunamigenic earthquakes, tsunami center, tsunami monitoring, mareogramms, wavelet analysis, parallel algorithms for observation data analysis, tsunami hazard assessment
Annotation: This paper proposes an approach for the analysis of data of geo- and hydrophysical monitoring for operational tsunami hazard assessment. Computational methods for estimating the parameters of earthquakes and recovering the form of tsunami source by mareogramms at the nearest DART stations were developed. Parallel version of the computational system for different types of parallel computing systems was implemented.