Results 31 to 40 of about 7,341 (139)
Organizational networks with self-standing interests
SHS Web of Conferences, 2017 With the development of world economy gradual replacing of traditional organizational structures by organizational networks, take place. New organizational complexes set difficult tasks for researchers considering optimum building and functioning of ...
Say Vasily, Sizyi Sergey, Gromov Igor
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Diagnostics of the Track Substructure Model and Its Practical Use
Communications, 2005 The paper presents mathematical equations of dependence of deformation resistance (compaction degree) and static/dynamic deformation module of elasticity reached by experimental measurements at laboratory model of scale 1:1 in 2003 and 2004 ...
Libor Izvolt +3 more
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Reinforced Subbases and Application of Other Chosen Parameters in Sleeper Subgrade Dimensioning
Communications, 2007 The paper focuses on reinforced subbases which are frequently applied to modernised railway tracks of Slovak Railways (ZSR) despite certain theoretical and normative deficiencies.
Libor Izvolt, Jan Kardos, Martin Mecar
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MATEC Web of Conferences, 2017 The requirements for the quality of the railway track with emphasis on its long service life, low maintenance costs and the required parameters of the track geometry have led railway infrastructure manager on the territory of the Slovak Republic ...
Izvolt Libor +2 more
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Communications, 2019 Elimination of seasonality temperature trends in a structural health monitoring of bridges is considered in the article. On example of a beam bridge, eigenfrequencies are plotted against seasonal fluctuations of environmental temperature.
Taisiya V. Shepitko +2 more
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Impact of operation on the geometric parameters of the track in ballastless track transition area
MATEC Web of Conferences, 2017 The paper deals with the methodology and results of diagnostics in test sections near the tunnel portals of newly built tunnel Turecký vrch on modernized line Nové Mesto nad Váhom – Púchov.
Ižvolt Libor +2 more
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Communications, 2013 The paper focuses on the methodology of determination of thermal conductivity coefficients λ of the construction materials of railway subbase. The determination of the thermal conductivity coefficients λ depends on the determination of the specific heat ...
Libor Izvolt, Peter Dobes, Martin Mecar
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Experimental Monitoring of Transition Zones in Railway Tunnels
Civil and Environmental Engineering, 2023 The expert research activity of transition zones of tunnels is one part of the overall set of these places on the railway line. Typical places where the stiffness of the railway changes are the portals of tunnels, where undesirable deformations occur ...
Hodas Stanislav +2 more
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Communications, 2016 Securing durability of parameter quality of track alignment design and track geometry is a goal of each railway infrastructure manager. To accomplish this goal, various methods and procedures are applied, but they are all based on regular diagnostics ...
Libor Izvolt +2 more
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Static and Dynamic Tests of the Railway Subgrade Construction Model
Communications, 2004 The presented paper deals with the research of railway subgrade construction. The purpose was to compare static and dynamic modulus of deformation namely on two different railway subgrade constructions.
Jan Lelak, Dusan Slavik, Martin Mecar
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