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1
Content available Environmental Pollution Monitoring on High-Voltage Insulators
Briancin J., Dolnik B., Fabian M., Kolcunova I., Kurimsky J., Dzmura J., Cimbala R.
Inżynieria Mineralna
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2018
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R. 19, nr 1
111--114
EN
This work is focused on environmental pollution monitoring on selected high-voltage insulators. It is well known that environmental pollution on electrical insulation is one of the problems faced by distribution utilities and electricity transmission system. Due to this reason there is a need to deal with monitoring of environmental pollution as it strongly influences their capability to withstand the high-voltage stress without the breakdown. It is the aim of present work to explain influence of morphology and chemical composition of pollutants on the surface resistance and conductivity of selected insulators.
PL
W artykule przedstawiono wyniki prac dotyczących monitorowania zanieczyszczenia środowiska na wybranych izolatorach wysokonapięciowych. Powszechnie wiadomo, że zanieczyszczenie środowiska oddziałujące na izolację elektryczną jest jednym z problemów, z którymi borykają się przedsiębiorstwa dystrybucyjne i system przesyłu energii elektrycznej. Z tego powodu istnieje potrzeba monitorowania zanieczyszczenia środowiska które silnie wpływa na ich zdolność instalacji do pracy bez awarii. Celem niniejszego artykułu jest wyjaśnienie wpływu morfologii i składu chemicznego zanieczyszczeń na oporność powierzchni i przewodnictwo wybranych izolatorów.
2
Content available Application of multidimensional statistical model for evaluation of measured data obtained from testing of the hcci engine prototype
Puškár M., Fabian M., Tomko T.
Diagnostyka
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2018
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Vol. 19, No. 1
19--24
EN
Evaluation of the measured data, which are obtained from testing of the HCCI engine prototype, is a complex process taking into consideration questions of the vibration diagnostics. The complexity of this procedure is caused due to a necessity to evaluate a large amount of the various data. One of the solution possibilities is application of a multidimensional statistical model within the evaluation process in order to obtain more accurate information about the actual operational condition concerning the analysed engine.
3
Content available An algorithm of a freeform surfaces measurement adjustment using a specification of the workpiece coordinate system location
Buša J., Buša J. Jr., Dovica M., Fabian M., Ižol P., Honus S.
Advances in Science and Technology. Research Journal
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2017
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Vol. 11, no 3
223--232
EN
A difficulty of freeform surfaces evaluations lies in a setup of a coordinate measuring system in general, when it is not possible to use the standard system of alignment by a point, a line, and a surface. An algorithm for the measurement adjustment using a small workpiece coordinate system movement and rotation to achieve a smaller least square error of the produced surface for a given freeform surface defined by the function of two variables is considered. The algorithm uses the Newton method for calculation of the orthogonal distance of a measured point to a given surface and also for minimization of the sum of the distance squares. Numerical results for an example are given.
4
Content available Procedure for the evaluation of measured data in terms of vibration diagnostics by application of a multidimensional statistical model
Tomko T., Puskar M., Fabian M., Boslai R.
Zeszyty Naukowe. Transport / Politechnika Śląska
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2016
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z. 91
125--131
EN
The evaluation process of measured data in terms of vibration diagnosis is problematic for timeline constructors. The complexity of such an evaluation is compounded by the fact that it is a process involving a large amount of disparate measurement data. One of the most effective analytical approaches when dealing with large amounts of data is to engage in a process using multidimensional statistical methods, which can provide a picture of the current status of the flexibility of the machinery. The more methods that are used, the more precise the statistical analysis of measurement data, making it possible to obtain a better picture of the current condition of the machinery.
5
Content available remote The latest actual trends in process of design and production in automotive industry
Fabian M., Spisak E., Seminsky J., Slota J.
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
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2010
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z. 80 [274]
73-80
EN
Time of innovation cycle in automotive industry is being reduced thanks to increasing market competition. It is possible to follow this trend first of all by means of CA-applications in the design and production phase of product life cycle. Regarding to systematic shortening of design process and manufacturing, the main accent is put on application of CAD/CAM technologies for serial production of shaped-complicated parts. The aim of this paper is to show some aspects of actual trends in process of design and production in automotive industry.
6
Content available remote A note on Asplund generated Banach spaces
Fabian M., Godefroy G., Zizler V.
Bulletin of the Polish Academy of Sciences. Mathematics
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1999
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Vol. 47, no 3
221-230
EN
Assume that a Banach space X has density character Aleph[1] and that there is an Asplund space Y and a bounded linear operator T from Y onto a dense set in X. We show that such Y then can be chosen a reflexive space provided that X admits a projectional resolution of identity in each equivalent norm on X. We prove that the dual unit ball B[x*] in its weak star topology is a Corson compact provided that the norm of X is Gateaux differentiable and B[x*] is a Valdivia compact.
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